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Finding the Third Proportional to 280,381 and 615,043

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Solution

The third proportional to 280,381 and 615,043 is: 1,349,156.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,381 : 615,043 = 615,043 : x
  2. Step 2: Convert to fraction form
    280,381/615,043 = 615,043/x
  3. Step 3: Cross multiply
    280,381x = 615,043 × 615,043
  4. Step 4: Simplify right side
    280,381x = 378,277,891,849
  5. Step 5: Solve for x
    x = 378,277,891,849/280,381
  6. Step 6: Final answer
    x = 1,349,156.65

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.