Home / 331,208.30-496,812.45-81,890.30

Finding the Fourth Proportional to 331,208.30, 496,812.45 and 81,890.30

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Solution

The fourth proportional to 331,208.30, 496,812.45 and 81,890.30 is: 122,835.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,208.30 : 496,812.45 = 81,890.30 : x
  2. Step 2: Convert to fraction form
    331,208.30/496,812.45 = 81,890.30/x
  3. Step 3: Cross multiply
    331,208.30x = 496,812.45 × 81,890.30
  4. Step 4: Simplify right side
    331,208.30x = 40,684,120,574.24
  5. Step 5: Solve for x
    x = 40,684,120,574.24/331,208.30
  6. Step 6: Final answer
    x = 122,835.45

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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.