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Finding the Fourth Proportional to 287,046.99, 396,082.71 and 172,301.31

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Solution

The fourth proportional to 287,046.99, 396,082.71 and 172,301.31 is: 237,750.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,046.99 : 396,082.71 = 172,301.31 : x
  2. Step 2: Convert to fraction form
    287,046.99/396,082.71 = 172,301.31/x
  3. Step 3: Cross multiply
    287,046.99x = 396,082.71 × 172,301.31
  4. Step 4: Simplify right side
    287,046.99x = 68,245,569,801.35
  5. Step 5: Solve for x
    x = 68,245,569,801.35/287,046.99
  6. Step 6: Final answer
    x = 237,750.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.