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Finding the Fourth Proportional to 386,563.41, 579,706.14 and 133,775.25

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Solution

The fourth proportional to 386,563.41, 579,706.14 and 133,775.25 is: 200,614.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,563.41 : 579,706.14 = 133,775.25 : x
  2. Step 2: Convert to fraction form
    386,563.41/579,706.14 = 133,775.25/x
  3. Step 3: Cross multiply
    386,563.41x = 579,706.14 × 133,775.25
  4. Step 4: Simplify right side
    386,563.41x = 77,550,333,805.04
  5. Step 5: Solve for x
    x = 77,550,333,805.04/386,563.41
  6. Step 6: Final answer
    x = 200,614.78

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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.