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Finding the Fourth Proportional to 391,599.88, 587,400.29 and 107,292.85

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Solution

The fourth proportional to 391,599.88, 587,400.29 and 107,292.85 is: 160,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,599.88 : 587,400.29 = 107,292.85 : x
  2. Step 2: Convert to fraction form
    391,599.88/587,400.29 = 107,292.85/x
  3. Step 3: Cross multiply
    391,599.88x = 587,400.29 × 107,292.85
  4. Step 4: Simplify right side
    391,599.88x = 63,023,851,204.93
  5. Step 5: Solve for x
    x = 63,023,851,204.93/391,599.88
  6. Step 6: Final answer
    x = 160,939.40

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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.