Home / 631,321.30-946,981.95-231,789.20

Finding the Fourth Proportional to 631,321.30, 946,981.95 and 231,789.20

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Solution

The fourth proportional to 631,321.30, 946,981.95 and 231,789.20 is: 347,683.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,321.30 : 946,981.95 = 231,789.20 : x
  2. Step 2: Convert to fraction form
    631,321.30/946,981.95 = 231,789.20/x
  3. Step 3: Cross multiply
    631,321.30x = 946,981.95 × 231,789.20
  4. Step 4: Simplify right side
    631,321.30x = 219,500,190,972.40
  5. Step 5: Solve for x
    x = 219,500,190,972.40/631,321.30
  6. Step 6: Final answer
    x = 347,683.81

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Half scale
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Double scale
Find fourth proportional to 631,322.30, 946,983.45 and 231,790.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.