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Finding the Third Proportional to 253,479.38 and 392,353.88

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Solution

The third proportional to 253,479.38 and 392,353.88 is: 607,313.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,479.38 : 392,353.88 = 392,353.88 : x
  2. Step 2: Convert to fraction form
    253,479.38/392,353.88 = 392,353.88/x
  3. Step 3: Cross multiply
    253,479.38x = 392,353.88 × 392,353.88
  4. Step 4: Simplify right side
    253,479.38x = 153,941,563,227.52
  5. Step 5: Solve for x
    x = 153,941,563,227.52/253,479.38
  6. Step 6: Final answer
    x = 607,313.96

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.