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Finding the Fourth Proportional to 519,344.10, 779,016.15 and 164,385.90

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Solution

The fourth proportional to 519,344.10, 779,016.15 and 164,385.90 is: 246,578.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,344.10 : 779,016.15 = 164,385.90 : x
  2. Step 2: Convert to fraction form
    519,344.10/779,016.15 = 164,385.90/x
  3. Step 3: Cross multiply
    519,344.10x = 779,016.15 × 164,385.90
  4. Step 4: Simplify right side
    519,344.10x = 128,059,270,932.29
  5. Step 5: Solve for x
    x = 128,059,270,932.29/519,344.10
  6. Step 6: Final answer
    x = 246,578.85

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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.