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Finding the Fourth Proportional to 268,617.40, 402,975.92 and 88,715.28

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Solution

The fourth proportional to 268,617.40, 402,975.92 and 88,715.28 is: 133,089.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,617.40 : 402,975.92 = 88,715.28 : x
  2. Step 2: Convert to fraction form
    268,617.40/402,975.92 = 88,715.28/x
  3. Step 3: Cross multiply
    268,617.40x = 402,975.92 × 88,715.28
  4. Step 4: Simplify right side
    268,617.40x = 35,750,121,576.06
  5. Step 5: Solve for x
    x = 35,750,121,576.06/268,617.40
  6. Step 6: Final answer
    x = 133,089.37

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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.