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Finding the Fourth Proportional to 223,718.40, 335,694.60 and 90,612.72

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Solution

The fourth proportional to 223,718.40, 335,694.60 and 90,612.72 is: 135,966.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,718.40 : 335,694.60 = 90,612.72 : x
  2. Step 2: Convert to fraction form
    223,718.40/335,694.60 = 90,612.72/x
  3. Step 3: Cross multiply
    223,718.40x = 335,694.60 × 90,612.72
  4. Step 4: Simplify right side
    223,718.40x = 30,418,200,795.31
  5. Step 5: Solve for x
    x = 30,418,200,795.31/223,718.40
  6. Step 6: Final answer
    x = 135,966.47

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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.