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Finding the Fourth Proportional to 391,010.30, 586,542.10 and 124,790.89

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Solution

The fourth proportional to 391,010.30, 586,542.10 and 124,790.89 is: 187,194.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,010.30 : 586,542.10 = 124,790.89 : x
  2. Step 2: Convert to fraction form
    391,010.30/586,542.10 = 124,790.89/x
  3. Step 3: Cross multiply
    391,010.30x = 586,542.10 × 124,790.89
  4. Step 4: Simplify right side
    391,010.30x = 73,195,111,675.91
  5. Step 5: Solve for x
    x = 73,195,111,675.91/391,010.30
  6. Step 6: Final answer
    x = 187,194.84

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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.