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Finding the Fourth Proportional to 223,148.88, 307,591.56 and 218,725.20

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Solution

The fourth proportional to 223,148.88, 307,591.56 and 218,725.20 is: 301,493.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,148.88 : 307,591.56 = 218,725.20 : x
  2. Step 2: Convert to fraction form
    223,148.88/307,591.56 = 218,725.20/x
  3. Step 3: Cross multiply
    223,148.88x = 307,591.56 × 218,725.20
  4. Step 4: Simplify right side
    223,148.88x = 67,278,025,479.31
  5. Step 5: Solve for x
    x = 67,278,025,479.31/223,148.88
  6. Step 6: Final answer
    x = 301,493.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.