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Finding the Fourth Proportional to 392,717.84, 589,064.98 and 108,425.74

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Solution

The fourth proportional to 392,717.84, 589,064.98 and 108,425.74 is: 162,635.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,717.84 : 589,064.98 = 108,425.74 : x
  2. Step 2: Convert to fraction form
    392,717.84/589,064.98 = 108,425.74/x
  3. Step 3: Cross multiply
    392,717.84x = 589,064.98 × 108,425.74
  4. Step 4: Simplify right side
    392,717.84x = 63,869,804,620.86
  5. Step 5: Solve for x
    x = 63,869,804,620.86/392,717.84
  6. Step 6: Final answer
    x = 162,635.36

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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.