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Finding the Fourth Proportional to 219,548.86, 329,081.17 and 143,615.87

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Solution

The fourth proportional to 219,548.86, 329,081.17 and 143,615.87 is: 215,265.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,548.86 : 329,081.17 = 143,615.87 : x
  2. Step 2: Convert to fraction form
    219,548.86/329,081.17 = 143,615.87/x
  3. Step 3: Cross multiply
    219,548.86x = 329,081.17 × 143,615.87
  4. Step 4: Simplify right side
    219,548.86x = 47,261,278,530.17
  5. Step 5: Solve for x
    x = 47,261,278,530.17/219,548.86
  6. Step 6: Final answer
    x = 215,265.42

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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.