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Finding the Fourth Proportional to 389,712.87, 584,630.46 and 165,073.95

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Solution

The fourth proportional to 389,712.87, 584,630.46 and 165,073.95 is: 247,636.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,712.87 : 584,630.46 = 165,073.95 : x
  2. Step 2: Convert to fraction form
    389,712.87/584,630.46 = 165,073.95/x
  3. Step 3: Cross multiply
    389,712.87x = 584,630.46 × 165,073.95
  4. Step 4: Simplify right side
    389,712.87x = 96,507,259,322.52
  5. Step 5: Solve for x
    x = 96,507,259,322.52/389,712.87
  6. Step 6: Final answer
    x = 247,636.83

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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.