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Finding the Fourth Proportional to 474,680.72, 711,872.48 and 137,744.69

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Solution

The fourth proportional to 474,680.72, 711,872.48 and 137,744.69 is: 206,573.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,680.72 : 711,872.48 = 137,744.69 : x
  2. Step 2: Convert to fraction form
    474,680.72/711,872.48 = 137,744.69/x
  3. Step 3: Cross multiply
    474,680.72x = 711,872.48 × 137,744.69
  4. Step 4: Simplify right side
    474,680.72x = 98,056,650,862.13
  5. Step 5: Solve for x
    x = 98,056,650,862.13/474,680.72
  6. Step 6: Final answer
    x = 206,573.91

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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.