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Finding the Fourth Proportional to 261,366.50, 392,052.78 and 248,618.72

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Solution

The fourth proportional to 261,366.50, 392,052.78 and 248,618.72 is: 372,930.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,366.50 : 392,052.78 = 248,618.72 : x
  2. Step 2: Convert to fraction form
    261,366.50/392,052.78 = 248,618.72/x
  3. Step 3: Cross multiply
    261,366.50x = 392,052.78 × 248,618.72
  4. Step 4: Simplify right side
    261,366.50x = 97,471,660,336.04
  5. Step 5: Solve for x
    x = 97,471,660,336.04/261,366.50
  6. Step 6: Final answer
    x = 372,930.96

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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.