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Finding the Fourth Proportional to 399,308.10, 598,962.15 and 133,077.30

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Solution

The fourth proportional to 399,308.10, 598,962.15 and 133,077.30 is: 199,615.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,308.10 : 598,962.15 = 133,077.30 : x
  2. Step 2: Convert to fraction form
    399,308.10/598,962.15 = 133,077.30/x
  3. Step 3: Cross multiply
    399,308.10x = 598,962.15 × 133,077.30
  4. Step 4: Simplify right side
    399,308.10x = 79,708,265,724.20
  5. Step 5: Solve for x
    x = 79,708,265,724.20/399,308.10
  6. Step 6: Final answer
    x = 199,615.95

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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.