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Finding the Fourth Proportional to 386,517.67, 579,767.02 and 149,860.43

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Solution

The fourth proportional to 386,517.67, 579,767.02 and 149,860.43 is: 224,786.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,517.67 : 579,767.02 = 149,860.43 : x
  2. Step 2: Convert to fraction form
    386,517.67/579,767.02 = 149,860.43/x
  3. Step 3: Cross multiply
    386,517.67x = 579,767.02 × 149,860.43
  4. Step 4: Simplify right side
    386,517.67x = 86,884,133,817.66
  5. Step 5: Solve for x
    x = 86,884,133,817.66/386,517.67
  6. Step 6: Final answer
    x = 224,786.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.