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Finding the Fourth Proportional to 240,792.12, 332,289.76 and 138,817.78

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Solution

The fourth proportional to 240,792.12, 332,289.76 and 138,817.78 is: 191,566.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,792.12 : 332,289.76 = 138,817.78 : x
  2. Step 2: Convert to fraction form
    240,792.12/332,289.76 = 138,817.78/x
  3. Step 3: Cross multiply
    240,792.12x = 332,289.76 × 138,817.78
  4. Step 4: Simplify right side
    240,792.12x = 46,127,726,799.93
  5. Step 5: Solve for x
    x = 46,127,726,799.93/240,792.12
  6. Step 6: Final answer
    x = 191,566.60

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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.