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Finding the Fourth Proportional to 391,763.31, 587,448.12 and 181,548.87

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Solution

The fourth proportional to 391,763.31, 587,448.12 and 181,548.87 is: 272,232.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,763.31 : 587,448.12 = 181,548.87 : x
  2. Step 2: Convert to fraction form
    391,763.31/587,448.12 = 181,548.87/x
  3. Step 3: Cross multiply
    391,763.31x = 587,448.12 × 181,548.87
  4. Step 4: Simplify right side
    391,763.31x = 106,650,542,369.62
  5. Step 5: Solve for x
    x = 106,650,542,369.62/391,763.31
  6. Step 6: Final answer
    x = 272,232.08

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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.