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Finding the Fourth Proportional to 223,008.80, 334,513.20 and 212,640.80

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Solution

The fourth proportional to 223,008.80, 334,513.20 and 212,640.80 is: 318,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,008.80 : 334,513.20 = 212,640.80 : x
  2. Step 2: Convert to fraction form
    223,008.80/334,513.20 = 212,640.80/x
  3. Step 3: Cross multiply
    223,008.80x = 334,513.20 × 212,640.80
  4. Step 4: Simplify right side
    223,008.80x = 71,131,154,458.56
  5. Step 5: Solve for x
    x = 71,131,154,458.56/223,008.80
  6. Step 6: Final answer
    x = 318,961.20

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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.