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Finding the Fourth Proportional to 223,979.60, 309,091.86 and 123,377.60

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Solution

The fourth proportional to 223,979.60, 309,091.86 and 123,377.60 is: 170,261.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,979.60 : 309,091.86 = 123,377.60 : x
  2. Step 2: Convert to fraction form
    223,979.60/309,091.86 = 123,377.60/x
  3. Step 3: Cross multiply
    223,979.60x = 309,091.86 × 123,377.60
  4. Step 4: Simplify right side
    223,979.60x = 38,135,011,866.34
  5. Step 5: Solve for x
    x = 38,135,011,866.34/223,979.60
  6. Step 6: Final answer
    x = 170,261.09

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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.