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Finding the Fourth Proportional to 392,741.88, 589,068.70 and 108,472.86

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Solution

The fourth proportional to 392,741.88, 589,068.70 and 108,472.86 is: 162,697.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,741.88 : 589,068.70 = 108,472.86 : x
  2. Step 2: Convert to fraction form
    392,741.88/589,068.70 = 108,472.86/x
  3. Step 3: Cross multiply
    392,741.88x = 589,068.70 × 108,472.86
  4. Step 4: Simplify right side
    392,741.88x = 63,897,966,625.48
  5. Step 5: Solve for x
    x = 63,897,966,625.48/392,741.88
  6. Step 6: Final answer
    x = 162,697.10

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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.