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Finding the Fourth Proportional to 491,332.56, 736,998.90 and 136,346.70

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Solution

The fourth proportional to 491,332.56, 736,998.90 and 136,346.70 is: 204,520.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,332.56 : 736,998.90 = 136,346.70 : x
  2. Step 2: Convert to fraction form
    491,332.56/736,998.90 = 136,346.70/x
  3. Step 3: Cross multiply
    491,332.56x = 736,998.90 × 136,346.70
  4. Step 4: Simplify right side
    491,332.56x = 100,487,367,918.63
  5. Step 5: Solve for x
    x = 100,487,367,918.63/491,332.56
  6. Step 6: Final answer
    x = 204,520.07

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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.