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Finding the Fourth Proportional to 223,393.20, 308,279.16 and 122,789.04

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Solution

The fourth proportional to 223,393.20, 308,279.16 and 122,789.04 is: 169,446.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,393.20 : 308,279.16 = 122,789.04 : x
  2. Step 2: Convert to fraction form
    223,393.20/308,279.16 = 122,789.04/x
  3. Step 3: Cross multiply
    223,393.20x = 308,279.16 × 122,789.04
  4. Step 4: Simplify right side
    223,393.20x = 37,853,302,108.41
  5. Step 5: Solve for x
    x = 37,853,302,108.41/223,393.20
  6. Step 6: Final answer
    x = 169,446.98

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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.