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Finding the Fourth Proportional to 240,693.62, 332,112.93 and 138,704.78

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Solution

The fourth proportional to 240,693.62, 332,112.93 and 138,704.78 is: 191,387.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,693.62 : 332,112.93 = 138,704.78 : x
  2. Step 2: Convert to fraction form
    240,693.62/332,112.93 = 138,704.78/x
  3. Step 3: Cross multiply
    240,693.62x = 332,112.93 × 138,704.78
  4. Step 4: Simplify right side
    240,693.62x = 46,065,650,890.81
  5. Step 5: Solve for x
    x = 46,065,650,890.81/240,693.62
  6. Step 6: Final answer
    x = 191,387.09

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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.