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Finding the Third Proportional to 256,725 and 572,478.75

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Solution

The third proportional to 256,725 and 572,478.75 is: 1,276,587.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,725 : 572,478.75 = 572,478.75 : x
  2. Step 2: Convert to fraction form
    256,725/572,478.75 = 572,478.75/x
  3. Step 3: Cross multiply
    256,725x = 572,478.75 × 572,478.75
  4. Step 4: Simplify right side
    256,725x = 327,731,919,201.56
  5. Step 5: Solve for x
    x = 327,731,919,201.56/256,725
  6. Step 6: Final answer
    x = 1,276,587.47

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.