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Finding the Fourth Proportional to 392,912.32, 588,875.72 and 168,008.76

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Solution

The fourth proportional to 392,912.32, 588,875.72 and 168,008.76 is: 251,802.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,912.32 : 588,875.72 = 168,008.76 : x
  2. Step 2: Convert to fraction form
    392,912.32/588,875.72 = 168,008.76/x
  3. Step 3: Cross multiply
    392,912.32x = 588,875.72 × 168,008.76
  4. Step 4: Simplify right side
    392,912.32x = 98,936,277,960.10
  5. Step 5: Solve for x
    x = 98,936,277,960.10/392,912.32
  6. Step 6: Final answer
    x = 251,802.43

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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.