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Finding the Fourth Proportional to 391,759.63, 587,623.02 and 125,514.25

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Solution

The fourth proportional to 391,759.63, 587,623.02 and 125,514.25 is: 188,266.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,759.63 : 587,623.02 = 125,514.25 : x
  2. Step 2: Convert to fraction form
    391,759.63/587,623.02 = 125,514.25/x
  3. Step 3: Cross multiply
    391,759.63x = 587,623.02 × 125,514.25
  4. Step 4: Simplify right side
    391,759.63x = 73,755,062,638.04
  5. Step 5: Solve for x
    x = 73,755,062,638.04/391,759.63
  6. Step 6: Final answer
    x = 188,266.11

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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.