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Finding the Fourth Proportional to 539,853.28, 744,998.79 and 298,131.46

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Solution

The fourth proportional to 539,853.28, 744,998.79 and 298,131.46 is: 411,422.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,853.28 : 744,998.79 = 298,131.46 : x
  2. Step 2: Convert to fraction form
    539,853.28/744,998.79 = 298,131.46/x
  3. Step 3: Cross multiply
    539,853.28x = 744,998.79 × 298,131.46
  4. Step 4: Simplify right side
    539,853.28x = 222,107,576,960.93
  5. Step 5: Solve for x
    x = 222,107,576,960.93/539,853.28
  6. Step 6: Final answer
    x = 411,422.11

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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.