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Finding the Fourth Proportional to 223,819.72, 308,872.38 and 123,217.72

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Solution

The fourth proportional to 223,819.72, 308,872.38 and 123,217.72 is: 170,041.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,819.72 : 308,872.38 = 123,217.72 : x
  2. Step 2: Convert to fraction form
    223,819.72/308,872.38 = 123,217.72/x
  3. Step 3: Cross multiply
    223,819.72x = 308,872.38 × 123,217.72
  4. Step 4: Simplify right side
    223,819.72x = 38,058,550,434.57
  5. Step 5: Solve for x
    x = 38,058,550,434.57/223,819.72
  6. Step 6: Final answer
    x = 170,041.10

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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.