Home / 385,321.78-577,839.28-132,531.30

Finding the Fourth Proportional to 385,321.78, 577,839.28 and 132,531.30

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Solution

The fourth proportional to 385,321.78, 577,839.28 and 132,531.30 is: 198,747.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,321.78 : 577,839.28 = 132,531.30 : x
  2. Step 2: Convert to fraction form
    385,321.78/577,839.28 = 132,531.30/x
  3. Step 3: Cross multiply
    385,321.78x = 577,839.28 × 132,531.30
  4. Step 4: Simplify right side
    385,321.78x = 76,581,790,969.46
  5. Step 5: Solve for x
    x = 76,581,790,969.46/385,321.78
  6. Step 6: Final answer
    x = 198,747.63

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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.