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Finding the Fourth Proportional to 391,612.96, 587,420 and 96,124.96

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Solution

The fourth proportional to 391,612.96, 587,420 and 96,124.96 is: 144,187.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,612.96 : 587,420 = 96,124.96 : x
  2. Step 2: Convert to fraction form
    391,612.96/587,420 = 96,124.96/x
  3. Step 3: Cross multiply
    391,612.96x = 587,420 × 96,124.96
  4. Step 4: Simplify right side
    391,612.96x = 56,465,724,003.20
  5. Step 5: Solve for x
    x = 56,465,724,003.20/391,612.96
  6. Step 6: Final answer
    x = 144,187.58

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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.