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Finding the Fourth Proportional to 391,992.80, 588,296.40 and 181,656.80

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Solution

The fourth proportional to 391,992.80, 588,296.40 and 181,656.80 is: 272,627.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,992.80 : 588,296.40 = 181,656.80 : x
  2. Step 2: Convert to fraction form
    391,992.80/588,296.40 = 181,656.80/x
  3. Step 3: Cross multiply
    391,992.80x = 588,296.40 × 181,656.80
  4. Step 4: Simplify right side
    391,992.80x = 106,868,041,475.52
  5. Step 5: Solve for x
    x = 106,868,041,475.52/391,992.80
  6. Step 6: Final answer
    x = 272,627.56

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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.