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Finding the Third Proportional to 261,882 and 400,432.50

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Solution

The third proportional to 261,882 and 400,432.50 is: 612,284.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,882 : 400,432.50 = 400,432.50 : x
  2. Step 2: Convert to fraction form
    261,882/400,432.50 = 400,432.50/x
  3. Step 3: Cross multiply
    261,882x = 400,432.50 × 400,432.50
  4. Step 4: Simplify right side
    261,882x = 160,346,187,056.25
  5. Step 5: Solve for x
    x = 160,346,187,056.25/261,882
  6. Step 6: Final answer
    x = 612,284.11

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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.