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Finding the Fourth Proportional to 268,531.72, 402,797.55 and 127,863.88

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Solution

The fourth proportional to 268,531.72, 402,797.55 and 127,863.88 is: 191,795.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,531.72 : 402,797.55 = 127,863.88 : x
  2. Step 2: Convert to fraction form
    268,531.72/402,797.55 = 127,863.88/x
  3. Step 3: Cross multiply
    268,531.72x = 402,797.55 × 127,863.88
  4. Step 4: Simplify right side
    268,531.72x = 51,503,257,597.49
  5. Step 5: Solve for x
    x = 51,503,257,597.49/268,531.72
  6. Step 6: Final answer
    x = 191,795.81

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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.