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Finding the Fourth Proportional to 391,962.48, 587,546.66 and 265,615.49

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Solution

The fourth proportional to 391,962.48, 587,546.66 and 265,615.49 is: 398,154.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,962.48 : 587,546.66 = 265,615.49 : x
  2. Step 2: Convert to fraction form
    391,962.48/587,546.66 = 265,615.49/x
  3. Step 3: Cross multiply
    391,962.48x = 587,546.66 × 265,615.49
  4. Step 4: Simplify right side
    391,962.48x = 156,061,489,727.95
  5. Step 5: Solve for x
    x = 156,061,489,727.95/391,962.48
  6. Step 6: Final answer
    x = 398,154.15

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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.