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Finding the Fourth Proportional to 240,955.40, 361,436.88 and 91,265.78

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Solution

The fourth proportional to 240,955.40, 361,436.88 and 91,265.78 is: 136,900.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,955.40 : 361,436.88 = 91,265.78 : x
  2. Step 2: Convert to fraction form
    240,955.40/361,436.88 = 91,265.78/x
  3. Step 3: Cross multiply
    240,955.40x = 361,436.88 × 91,265.78
  4. Step 4: Simplify right side
    240,955.40x = 32,986,818,773.97
  5. Step 5: Solve for x
    x = 32,986,818,773.97/240,955.40
  6. Step 6: Final answer
    x = 136,900.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.