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Finding the Fourth Proportional to 223,760.80, 335,642.11 and 90,643.58

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Solution

The fourth proportional to 223,760.80, 335,642.11 and 90,643.58 is: 135,965.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,760.80 : 335,642.11 = 90,643.58 : x
  2. Step 2: Convert to fraction form
    223,760.80/335,642.11 = 90,643.58/x
  3. Step 3: Cross multiply
    223,760.80x = 335,642.11 × 90,643.58
  4. Step 4: Simplify right side
    223,760.80x = 30,423,800,544.33
  5. Step 5: Solve for x
    x = 30,423,800,544.33/223,760.80
  6. Step 6: Final answer
    x = 135,965.73

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1.5x scale

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.