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Finding the Third Proportional to 231,781.50 and 358,698.38

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Solution

The third proportional to 231,781.50 and 358,698.38 is: 555,111.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,781.50 : 358,698.38 = 358,698.38 : x
  2. Step 2: Convert to fraction form
    231,781.50/358,698.38 = 358,698.38/x
  3. Step 3: Cross multiply
    231,781.50x = 358,698.38 × 358,698.38
  4. Step 4: Simplify right side
    231,781.50x = 128,664,524,227.64
  5. Step 5: Solve for x
    x = 128,664,524,227.64/231,781.50
  6. Step 6: Final answer
    x = 555,111.28

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.