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Finding the Third Proportional to 261,825 and 400,352

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Solution

The third proportional to 261,825 and 400,352 is: 612,171.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,825 : 400,352 = 400,352 : x
  2. Step 2: Convert to fraction form
    261,825/400,352 = 400,352/x
  3. Step 3: Cross multiply
    261,825x = 400,352 × 400,352
  4. Step 4: Simplify right side
    261,825x = 160,281,723,904
  5. Step 5: Solve for x
    x = 160,281,723,904/261,825
  6. Step 6: Final answer
    x = 612,171.20

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.