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Finding the Fourth Proportional to 391,827.22, 587,740.38 and 107,520.88

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Solution

The fourth proportional to 391,827.22, 587,740.38 and 107,520.88 is: 161,281.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,827.22 : 587,740.38 = 107,520.88 : x
  2. Step 2: Convert to fraction form
    391,827.22/587,740.38 = 107,520.88/x
  3. Step 3: Cross multiply
    391,827.22x = 587,740.38 × 107,520.88
  4. Step 4: Simplify right side
    391,827.22x = 63,194,362,869.13
  5. Step 5: Solve for x
    x = 63,194,362,869.13/391,827.22
  6. Step 6: Final answer
    x = 161,281.20

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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.