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Finding the Fourth Proportional to 508,725.20, 763,087.80 and 153,702.20

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Solution

The fourth proportional to 508,725.20, 763,087.80 and 153,702.20 is: 230,553.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,725.20 : 763,087.80 = 153,702.20 : x
  2. Step 2: Convert to fraction form
    508,725.20/763,087.80 = 153,702.20/x
  3. Step 3: Cross multiply
    508,725.20x = 763,087.80 × 153,702.20
  4. Step 4: Simplify right side
    508,725.20x = 117,288,273,653.16
  5. Step 5: Solve for x
    x = 117,288,273,653.16/508,725.20
  6. Step 6: Final answer
    x = 230,553.30

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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.