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Finding the Fourth Proportional to 240,790.78, 332,293.74 and 145,279.04

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Solution

The fourth proportional to 240,790.78, 332,293.74 and 145,279.04 is: 200,486.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,790.78 : 332,293.74 = 145,279.04 : x
  2. Step 2: Convert to fraction form
    240,790.78/332,293.74 = 145,279.04/x
  3. Step 3: Cross multiply
    240,790.78x = 332,293.74 × 145,279.04
  4. Step 4: Simplify right side
    240,790.78x = 48,275,315,545.21
  5. Step 5: Solve for x
    x = 48,275,315,545.21/240,790.78
  6. Step 6: Final answer
    x = 200,486.56

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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.