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Finding the Fourth Proportional to 371,555.52, 557,157.71 and 143,957.76

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Solution

The fourth proportional to 371,555.52, 557,157.71 and 143,957.76 is: 215,868.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,555.52 : 557,157.71 = 143,957.76 : x
  2. Step 2: Convert to fraction form
    371,555.52/557,157.71 = 143,957.76/x
  3. Step 3: Cross multiply
    371,555.52x = 557,157.71 × 143,957.76
  4. Step 4: Simplify right side
    371,555.52x = 80,207,175,898.33
  5. Step 5: Solve for x
    x = 80,207,175,898.33/371,555.52
  6. Step 6: Final answer
    x = 215,868.62

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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.