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Finding the Fourth Proportional to 391,010.85, 586,526.55 and 124,771.11

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Solution

The fourth proportional to 391,010.85, 586,526.55 and 124,771.11 is: 187,159.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,010.85 : 586,526.55 = 124,771.11 : x
  2. Step 2: Convert to fraction form
    391,010.85/586,526.55 = 124,771.11/x
  3. Step 3: Cross multiply
    391,010.85x = 586,526.55 × 124,771.11
  4. Step 4: Simplify right side
    391,010.85x = 73,181,568,687.97
  5. Step 5: Solve for x
    x = 73,181,568,687.97/391,010.85
  6. Step 6: Final answer
    x = 187,159.94

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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.