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Finding the Fourth Proportional to 391,611.96, 587,418.50 and 96,123.96

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Solution

The fourth proportional to 391,611.96, 587,418.50 and 96,123.96 is: 144,186.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,611.96 : 587,418.50 = 96,123.96 : x
  2. Step 2: Convert to fraction form
    391,611.96/587,418.50 = 96,123.96/x
  3. Step 3: Cross multiply
    391,611.96x = 587,418.50 × 96,123.96
  4. Step 4: Simplify right side
    391,611.96x = 56,464,992,397.26
  5. Step 5: Solve for x
    x = 56,464,992,397.26/391,611.96
  6. Step 6: Final answer
    x = 144,186.08

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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.