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Finding the Fourth Proportional to 539,882.38, 745,043.30 and 298,171.09

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Solution

The fourth proportional to 539,882.38, 745,043.30 and 298,171.09 is: 411,479.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,882.38 : 745,043.30 = 298,171.09 : x
  2. Step 2: Convert to fraction form
    539,882.38/745,043.30 = 298,171.09/x
  3. Step 3: Cross multiply
    539,882.38x = 745,043.30 × 298,171.09
  4. Step 4: Simplify right side
    539,882.38x = 222,150,372,858.20
  5. Step 5: Solve for x
    x = 222,150,372,858.20/539,882.38
  6. Step 6: Final answer
    x = 411,479.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.