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Finding the Fourth Proportional to 250,815.28, 346,129.32 and 137,648.56

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Solution

The fourth proportional to 250,815.28, 346,129.32 and 137,648.56 is: 189,957.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,815.28 : 346,129.32 = 137,648.56 : x
  2. Step 2: Convert to fraction form
    250,815.28/346,129.32 = 137,648.56/x
  3. Step 3: Cross multiply
    250,815.28x = 346,129.32 × 137,648.56
  4. Step 4: Simplify right side
    250,815.28x = 47,644,202,471.78
  5. Step 5: Solve for x
    x = 47,644,202,471.78/250,815.28
  6. Step 6: Final answer
    x = 189,957.34

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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.