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Finding the Fourth Proportional to 392,685.39, 588,483.09 and 178,930.91

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Solution

The fourth proportional to 392,685.39, 588,483.09 and 178,930.91 is: 268,148.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,685.39 : 588,483.09 = 178,930.91 : x
  2. Step 2: Convert to fraction form
    392,685.39/588,483.09 = 178,930.91/x
  3. Step 3: Cross multiply
    392,685.39x = 588,483.09 × 178,930.91
  4. Step 4: Simplify right side
    392,685.39x = 105,297,816,284.52
  5. Step 5: Solve for x
    x = 105,297,816,284.52/392,685.39
  6. Step 6: Final answer
    x = 268,148.04

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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.