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Finding the Fourth Proportional to 539,318.13, 809,286.30 and 219,410.97

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Solution

The fourth proportional to 539,318.13, 809,286.30 and 219,410.97 is: 329,242.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,318.13 : 809,286.30 = 219,410.97 : x
  2. Step 2: Convert to fraction form
    539,318.13/809,286.30 = 219,410.97/x
  3. Step 3: Cross multiply
    539,318.13x = 809,286.30 × 219,410.97
  4. Step 4: Simplify right side
    539,318.13x = 177,566,292,090.71
  5. Step 5: Solve for x
    x = 177,566,292,090.71/539,318.13
  6. Step 6: Final answer
    x = 329,242.21

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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.