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Finding the Third Proportional to 153,554.79 and 319,370.61

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Solution

The third proportional to 153,554.79 and 319,370.61 is: 664,242.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,554.79 : 319,370.61 = 319,370.61 : x
  2. Step 2: Convert to fraction form
    153,554.79/319,370.61 = 319,370.61/x
  3. Step 3: Cross multiply
    153,554.79x = 319,370.61 × 319,370.61
  4. Step 4: Simplify right side
    153,554.79x = 101,997,586,990.25
  5. Step 5: Solve for x
    x = 101,997,586,990.25/153,554.79
  6. Step 6: Final answer
    x = 664,242.30

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.