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Finding the Fourth Proportional to 223,431.70, 335,042.18 and 81,176.64

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Solution

The fourth proportional to 223,431.70, 335,042.18 and 81,176.64 is: 121,726.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,431.70 : 335,042.18 = 81,176.64 : x
  2. Step 2: Convert to fraction form
    223,431.70/335,042.18 = 81,176.64/x
  3. Step 3: Cross multiply
    223,431.70x = 335,042.18 × 81,176.64
  4. Step 4: Simplify right side
    223,431.70x = 27,197,598,430.68
  5. Step 5: Solve for x
    x = 27,197,598,430.68/223,431.70
  6. Step 6: Final answer
    x = 121,726.68

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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.