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Finding the Fourth Proportional to 223,279.80, 334,930.65 and 90,143.43

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Solution

The fourth proportional to 223,279.80, 334,930.65 and 90,143.43 is: 135,219.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,279.80 : 334,930.65 = 90,143.43 : x
  2. Step 2: Convert to fraction form
    223,279.80/334,930.65 = 90,143.43/x
  3. Step 3: Cross multiply
    223,279.80x = 334,930.65 × 90,143.43
  4. Step 4: Simplify right side
    223,279.80x = 30,191,797,603.13
  5. Step 5: Solve for x
    x = 30,191,797,603.13/223,279.80
  6. Step 6: Final answer
    x = 135,219.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.