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Finding the Fourth Proportional to 399,155.20, 598,963.20 and 149,862.40

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Solution

The fourth proportional to 399,155.20, 598,963.20 and 149,862.40 is: 224,880.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,155.20 : 598,963.20 = 149,862.40 : x
  2. Step 2: Convert to fraction form
    399,155.20/598,963.20 = 149,862.40/x
  3. Step 3: Cross multiply
    399,155.20x = 598,963.20 × 149,862.40
  4. Step 4: Simplify right side
    399,155.20x = 89,762,062,663.68
  5. Step 5: Solve for x
    x = 89,762,062,663.68/399,155.20
  6. Step 6: Final answer
    x = 224,880.10

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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.