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Finding the Fourth Proportional to 491,242.90, 736,864.28 and 136,256.92

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Solution

The fourth proportional to 491,242.90, 736,864.28 and 136,256.92 is: 204,385.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,242.90 : 736,864.28 = 136,256.92 : x
  2. Step 2: Convert to fraction form
    491,242.90/736,864.28 = 136,256.92/x
  3. Step 3: Cross multiply
    491,242.90x = 736,864.28 × 136,256.92
  4. Step 4: Simplify right side
    491,242.90x = 100,402,857,591.46
  5. Step 5: Solve for x
    x = 100,402,857,591.46/491,242.90
  6. Step 6: Final answer
    x = 204,385.36

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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.