Home / 456,421.20-684,631.80-231,816.30

Finding the Fourth Proportional to 456,421.20, 684,631.80 and 231,816.30

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Solution

The fourth proportional to 456,421.20, 684,631.80 and 231,816.30 is: 347,724.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,421.20 : 684,631.80 = 231,816.30 : x
  2. Step 2: Convert to fraction form
    456,421.20/684,631.80 = 231,816.30/x
  3. Step 3: Cross multiply
    456,421.20x = 684,631.80 × 231,816.30
  4. Step 4: Simplify right side
    456,421.20x = 158,708,810,738.34
  5. Step 5: Solve for x
    x = 158,708,810,738.34/456,421.20
  6. Step 6: Final answer
    x = 347,724.45

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Similar ratio
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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.