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Finding the Fourth Proportional to 351,506.72, 527,150.98 and 126,838

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Solution

The fourth proportional to 351,506.72, 527,150.98 and 126,838 is: 190,217.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,506.72 : 527,150.98 = 126,838 : x
  2. Step 2: Convert to fraction form
    351,506.72/527,150.98 = 126,838/x
  3. Step 3: Cross multiply
    351,506.72x = 527,150.98 × 126,838
  4. Step 4: Simplify right side
    351,506.72x = 66,862,776,001.24
  5. Step 5: Solve for x
    x = 66,862,776,001.24/351,506.72
  6. Step 6: Final answer
    x = 190,217.63

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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.