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Finding the Fourth Proportional to 392,982.30, 589,473.45 and 108,672.30

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Solution

The fourth proportional to 392,982.30, 589,473.45 and 108,672.30 is: 163,008.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,982.30 : 589,473.45 = 108,672.30 : x
  2. Step 2: Convert to fraction form
    392,982.30/589,473.45 = 108,672.30/x
  3. Step 3: Cross multiply
    392,982.30x = 589,473.45 × 108,672.30
  4. Step 4: Simplify right side
    392,982.30x = 64,059,435,600.44
  5. Step 5: Solve for x
    x = 64,059,435,600.44/392,982.30
  6. Step 6: Final answer
    x = 163,008.45

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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.