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Finding the Fourth Proportional to 268,591.73, 402,912.83 and 79,052.20

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Solution

The fourth proportional to 268,591.73, 402,912.83 and 79,052.20 is: 118,585.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,591.73 : 402,912.83 = 79,052.20 : x
  2. Step 2: Convert to fraction form
    268,591.73/402,912.83 = 79,052.20/x
  3. Step 3: Cross multiply
    268,591.73x = 402,912.83 × 79,052.20
  4. Step 4: Simplify right side
    268,591.73x = 31,851,144,810.07
  5. Step 5: Solve for x
    x = 31,851,144,810.07/268,591.73
  6. Step 6: Final answer
    x = 118,585.73

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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.