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Finding the Third Proportional to 269,439 and 415,390.50

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Solution

The third proportional to 269,439 and 415,390.50 is: 640,401.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,439 : 415,390.50 = 415,390.50 : x
  2. Step 2: Convert to fraction form
    269,439/415,390.50 = 415,390.50/x
  3. Step 3: Cross multiply
    269,439x = 415,390.50 × 415,390.50
  4. Step 4: Simplify right side
    269,439x = 172,549,267,490.25
  5. Step 5: Solve for x
    x = 172,549,267,490.25/269,439
  6. Step 6: Final answer
    x = 640,401.97

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.