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Finding the Fourth Proportional to 527,287.78, 791,066.49 and 153,310.78

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Solution

The fourth proportional to 527,287.78, 791,066.49 and 153,310.78 is: 230,005.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,287.78 : 791,066.49 = 153,310.78 : x
  2. Step 2: Convert to fraction form
    527,287.78/791,066.49 = 153,310.78/x
  3. Step 3: Cross multiply
    527,287.78x = 791,066.49 × 153,310.78
  4. Step 4: Simplify right side
    527,287.78x = 121,279,020,613.76
  5. Step 5: Solve for x
    x = 121,279,020,613.76/527,287.78
  6. Step 6: Final answer
    x = 230,005.37

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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.