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Finding the Fourth Proportional to 392,717.59, 589,064.61 and 108,425.49

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Solution

The fourth proportional to 392,717.59, 589,064.61 and 108,425.49 is: 162,634.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,717.59 : 589,064.61 = 108,425.49 : x
  2. Step 2: Convert to fraction form
    392,717.59/589,064.61 = 108,425.49/x
  3. Step 3: Cross multiply
    392,717.59x = 589,064.61 × 108,425.49
  4. Step 4: Simplify right side
    392,717.59x = 63,869,615,493.46
  5. Step 5: Solve for x
    x = 63,869,615,493.46/392,717.59
  6. Step 6: Final answer
    x = 162,634.98

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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.