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Finding the Third Proportional to 280,056 and 425,262

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Solution

The third proportional to 280,056 and 425,262 is: 645,755.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,056 : 425,262 = 425,262 : x
  2. Step 2: Convert to fraction form
    280,056/425,262 = 425,262/x
  3. Step 3: Cross multiply
    280,056x = 425,262 × 425,262
  4. Step 4: Simplify right side
    280,056x = 180,847,768,644
  5. Step 5: Solve for x
    x = 180,847,768,644/280,056
  6. Step 6: Final answer
    x = 645,755.74

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.