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Finding the Fourth Proportional to 240,645.15, 332,098.11 and 138,662.78

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Solution

The fourth proportional to 240,645.15, 332,098.11 and 138,662.78 is: 191,359.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,645.15 : 332,098.11 = 138,662.78 : x
  2. Step 2: Convert to fraction form
    240,645.15/332,098.11 = 138,662.78/x
  3. Step 3: Cross multiply
    240,645.15x = 332,098.11 × 138,662.78
  4. Step 4: Simplify right side
    240,645.15x = 46,049,645,504.86
  5. Step 5: Solve for x
    x = 46,049,645,504.86/240,645.15
  6. Step 6: Final answer
    x = 191,359.13

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1.5x scale

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.