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Finding the Fourth Proportional to 192,503.67, 288,551.87 and 72,508.69

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Solution

The fourth proportional to 192,503.67, 288,551.87 and 72,508.69 is: 108,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,503.67 : 288,551.87 = 72,508.69 : x
  2. Step 2: Convert to fraction form
    192,503.67/288,551.87 = 72,508.69/x
  3. Step 3: Cross multiply
    192,503.67x = 288,551.87 × 72,508.69
  4. Step 4: Simplify right side
    192,503.67x = 20,922,518,360.80
  5. Step 5: Solve for x
    x = 20,922,518,360.80/192,503.67
  6. Step 6: Final answer
    x = 108,686.34

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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.