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Finding the Third Proportional to 258,061.50 and 379,473.75

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Solution

The third proportional to 258,061.50 and 379,473.75 is: 558,007.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,061.50 : 379,473.75 = 379,473.75 : x
  2. Step 2: Convert to fraction form
    258,061.50/379,473.75 = 379,473.75/x
  3. Step 3: Cross multiply
    258,061.50x = 379,473.75 × 379,473.75
  4. Step 4: Simplify right side
    258,061.50x = 144,000,326,939.06
  5. Step 5: Solve for x
    x = 144,000,326,939.06/258,061.50
  6. Step 6: Final answer
    x = 558,007.79

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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.