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Finding the Fourth Proportional to 390,560.52, 585,906.39 and 124,402.62

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Solution

The fourth proportional to 390,560.52, 585,906.39 and 124,402.62 is: 186,624.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,560.52 : 585,906.39 = 124,402.62 : x
  2. Step 2: Convert to fraction form
    390,560.52/585,906.39 = 124,402.62/x
  3. Step 3: Cross multiply
    390,560.52x = 585,906.39 × 124,402.62
  4. Step 4: Simplify right side
    390,560.52x = 72,888,289,990.74
  5. Step 5: Solve for x
    x = 72,888,289,990.74/390,560.52
  6. Step 6: Final answer
    x = 186,624.83

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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.