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Finding the Third Proportional to 281,014 and 428,518

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Solution

The third proportional to 281,014 and 428,518 is: 653,446.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,014 : 428,518 = 428,518 : x
  2. Step 2: Convert to fraction form
    281,014/428,518 = 428,518/x
  3. Step 3: Cross multiply
    281,014x = 428,518 × 428,518
  4. Step 4: Simplify right side
    281,014x = 183,627,676,324
  5. Step 5: Solve for x
    x = 183,627,676,324/281,014
  6. Step 6: Final answer
    x = 653,446.72

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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.