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Finding the Fourth Proportional to 324,665.60, 486,998.40 and 88,007.90

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Solution

The fourth proportional to 324,665.60, 486,998.40 and 88,007.90 is: 132,011.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,665.60 : 486,998.40 = 88,007.90 : x
  2. Step 2: Convert to fraction form
    324,665.60/486,998.40 = 88,007.90/x
  3. Step 3: Cross multiply
    324,665.60x = 486,998.40 × 88,007.90
  4. Step 4: Simplify right side
    324,665.60x = 42,859,706,487.36
  5. Step 5: Solve for x
    x = 42,859,706,487.36/324,665.60
  6. Step 6: Final answer
    x = 132,011.85

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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.