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Finding the Fourth Proportional to 453,400.28, 680,138.50 and 137,859.92

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Solution

The fourth proportional to 453,400.28, 680,138.50 and 137,859.92 is: 206,801.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,400.28 : 680,138.50 = 137,859.92 : x
  2. Step 2: Convert to fraction form
    453,400.28/680,138.50 = 137,859.92/x
  3. Step 3: Cross multiply
    453,400.28x = 680,138.50 × 137,859.92
  4. Step 4: Simplify right side
    453,400.28x = 93,763,839,198.92
  5. Step 5: Solve for x
    x = 93,763,839,198.92/453,400.28
  6. Step 6: Final answer
    x = 206,801.46

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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.