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Finding the Third Proportional to 129,648 and 281,428

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Solution

The third proportional to 129,648 and 281,428 is: 610,898.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,648 : 281,428 = 281,428 : x
  2. Step 2: Convert to fraction form
    129,648/281,428 = 281,428/x
  3. Step 3: Cross multiply
    129,648x = 281,428 × 281,428
  4. Step 4: Simplify right side
    129,648x = 79,201,719,184
  5. Step 5: Solve for x
    x = 79,201,719,184/129,648
  6. Step 6: Final answer
    x = 610,898.12

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.