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Finding the Fourth Proportional to 219,179.20, 328,768.80 and 203,627.20

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Solution

The fourth proportional to 219,179.20, 328,768.80 and 203,627.20 is: 305,440.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,179.20 : 328,768.80 = 203,627.20 : x
  2. Step 2: Convert to fraction form
    219,179.20/328,768.80 = 203,627.20/x
  3. Step 3: Cross multiply
    219,179.20x = 328,768.80 × 203,627.20
  4. Step 4: Simplify right side
    219,179.20x = 66,946,270,191.36
  5. Step 5: Solve for x
    x = 66,946,270,191.36/219,179.20
  6. Step 6: Final answer
    x = 305,440.80

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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.