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Finding the Fourth Proportional to 219,934.40, 329,882.40 and 72,190.40

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Solution

The fourth proportional to 219,934.40, 329,882.40 and 72,190.40 is: 108,279.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,934.40 : 329,882.40 = 72,190.40 : x
  2. Step 2: Convert to fraction form
    219,934.40/329,882.40 = 72,190.40/x
  3. Step 3: Cross multiply
    219,934.40x = 329,882.40 × 72,190.40
  4. Step 4: Simplify right side
    219,934.40x = 23,814,342,408.96
  5. Step 5: Solve for x
    x = 23,814,342,408.96/219,934.40
  6. Step 6: Final answer
    x = 108,279.30

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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.