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Finding the Fourth Proportional to 228,337.20, 342,505.80 and 103,678.20

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Solution

The fourth proportional to 228,337.20, 342,505.80 and 103,678.20 is: 155,517.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,337.20 : 342,505.80 = 103,678.20 : x
  2. Step 2: Convert to fraction form
    228,337.20/342,505.80 = 103,678.20/x
  3. Step 3: Cross multiply
    228,337.20x = 342,505.80 × 103,678.20
  4. Step 4: Simplify right side
    228,337.20x = 35,510,384,833.56
  5. Step 5: Solve for x
    x = 35,510,384,833.56/228,337.20
  6. Step 6: Final answer
    x = 155,517.30

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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.