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Finding the Fourth Proportional to 223,975.78, 309,086.60 and 123,373.78

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Solution

The fourth proportional to 223,975.78, 309,086.60 and 123,373.78 is: 170,255.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,975.78 : 309,086.60 = 123,373.78 : x
  2. Step 2: Convert to fraction form
    223,975.78/309,086.60 = 123,373.78/x
  3. Step 3: Cross multiply
    223,975.78x = 309,086.60 × 123,373.78
  4. Step 4: Simplify right side
    223,975.78x = 38,133,182,189.35
  5. Step 5: Solve for x
    x = 38,133,182,189.35/223,975.78
  6. Step 6: Final answer
    x = 170,255.83

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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.