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Finding the Fourth Proportional to 240,704.85, 331,871.19 and 154,511.76

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Solution

The fourth proportional to 240,704.85, 331,871.19 and 154,511.76 is: 213,032.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,704.85 : 331,871.19 = 154,511.76 : x
  2. Step 2: Convert to fraction form
    240,704.85/331,871.19 = 154,511.76/x
  3. Step 3: Cross multiply
    240,704.85x = 331,871.19 × 154,511.76
  4. Step 4: Simplify right side
    240,704.85x = 51,278,001,660.19
  5. Step 5: Solve for x
    x = 51,278,001,660.19/240,704.85
  6. Step 6: Final answer
    x = 213,032.69

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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.