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Finding the Fourth Proportional to 391,951.04, 541,159.56 and 263,082.80

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Solution

The fourth proportional to 391,951.04, 541,159.56 and 263,082.80 is: 363,233.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,951.04 : 541,159.56 = 263,082.80 : x
  2. Step 2: Convert to fraction form
    391,951.04/541,159.56 = 263,082.80/x
  3. Step 3: Cross multiply
    391,951.04x = 541,159.56 × 263,082.80
  4. Step 4: Simplify right side
    391,951.04x = 142,369,772,291.57
  5. Step 5: Solve for x
    x = 142,369,772,291.57/391,951.04
  6. Step 6: Final answer
    x = 363,233.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.