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Finding the Third Proportional to 256,115.25 and 375,869.25

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Solution

The third proportional to 256,115.25 and 375,869.25 is: 551,617.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,115.25 : 375,869.25 = 375,869.25 : x
  2. Step 2: Convert to fraction form
    256,115.25/375,869.25 = 375,869.25/x
  3. Step 3: Cross multiply
    256,115.25x = 375,869.25 × 375,869.25
  4. Step 4: Simplify right side
    256,115.25x = 141,277,693,095.56
  5. Step 5: Solve for x
    x = 141,277,693,095.56/256,115.25
  6. Step 6: Final answer
    x = 551,617.65

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.