Home / 487,654.20-731,481.30-238,822.20

Finding the Fourth Proportional to 487,654.20, 731,481.30 and 238,822.20

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Solution

The fourth proportional to 487,654.20, 731,481.30 and 238,822.20 is: 358,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,654.20 : 731,481.30 = 238,822.20 : x
  2. Step 2: Convert to fraction form
    487,654.20/731,481.30 = 238,822.20/x
  3. Step 3: Cross multiply
    487,654.20x = 731,481.30 × 238,822.20
  4. Step 4: Simplify right side
    487,654.20x = 174,693,973,324.86
  5. Step 5: Solve for x
    x = 174,693,973,324.86/487,654.20
  6. Step 6: Final answer
    x = 358,233.30

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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.