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Finding the Fourth Proportional to 393,143.95, 588,851.52 and 324,902.58

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Solution

The fourth proportional to 393,143.95, 588,851.52 and 324,902.58 is: 486,639.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,143.95 : 588,851.52 = 324,902.58 : x
  2. Step 2: Convert to fraction form
    393,143.95/588,851.52 = 324,902.58/x
  3. Step 3: Cross multiply
    393,143.95x = 588,851.52 × 324,902.58
  4. Step 4: Simplify right side
    393,143.95x = 191,319,378,084.92
  5. Step 5: Solve for x
    x = 191,319,378,084.92/393,143.95
  6. Step 6: Final answer
    x = 486,639.51

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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.