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Finding the Third Proportional to 288,387.13 and 621,146.44

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Solution

The third proportional to 288,387.13 and 621,146.44 is: 1,337,864.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,387.13 : 621,146.44 = 621,146.44 : x
  2. Step 2: Convert to fraction form
    288,387.13/621,146.44 = 621,146.44/x
  3. Step 3: Cross multiply
    288,387.13x = 621,146.44 × 621,146.44
  4. Step 4: Simplify right side
    288,387.13x = 385,822,904,098.01
  5. Step 5: Solve for x
    x = 385,822,904,098.01/288,387.13
  6. Step 6: Final answer
    x = 1,337,864.49

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.