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Finding the Third Proportional to 215,424.50 and 328,968.75

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Solution

The third proportional to 215,424.50 and 328,968.75 is: 502,359.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,424.50 : 328,968.75 = 328,968.75 : x
  2. Step 2: Convert to fraction form
    215,424.50/328,968.75 = 328,968.75/x
  3. Step 3: Cross multiply
    215,424.50x = 328,968.75 × 328,968.75
  4. Step 4: Simplify right side
    215,424.50x = 108,220,438,476.56
  5. Step 5: Solve for x
    x = 108,220,438,476.56/215,424.50
  6. Step 6: Final answer
    x = 502,359.01

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.