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Finding the Fourth Proportional to 223,819.40, 308,884.76 and 123,217.40

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Solution

The fourth proportional to 223,819.40, 308,884.76 and 123,217.40 is: 170,047.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,819.40 : 308,884.76 = 123,217.40 : x
  2. Step 2: Convert to fraction form
    223,819.40/308,884.76 = 123,217.40/x
  3. Step 3: Cross multiply
    223,819.40x = 308,884.76 × 123,217.40
  4. Step 4: Simplify right side
    223,819.40x = 38,059,977,026.82
  5. Step 5: Solve for x
    x = 38,059,977,026.82/223,819.40
  6. Step 6: Final answer
    x = 170,047.71

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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.