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Finding the Fourth Proportional to 351,996.80, 527,278.40 and 218,467.20

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Solution

The fourth proportional to 351,996.80, 527,278.40 and 218,467.20 is: 327,255.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,996.80 : 527,278.40 = 218,467.20 : x
  2. Step 2: Convert to fraction form
    351,996.80/527,278.40 = 218,467.20/x
  3. Step 3: Cross multiply
    351,996.80x = 527,278.40 × 218,467.20
  4. Step 4: Simplify right side
    351,996.80x = 115,193,035,668.48
  5. Step 5: Solve for x
    x = 115,193,035,668.48/351,996.80
  6. Step 6: Final answer
    x = 327,255.92

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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.