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Finding the Fourth Proportional to 220,314.88, 330,055.68 and 126,536.32

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Solution

The fourth proportional to 220,314.88, 330,055.68 and 126,536.32 is: 189,565.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,314.88 : 330,055.68 = 126,536.32 : x
  2. Step 2: Convert to fraction form
    220,314.88/330,055.68 = 126,536.32/x
  3. Step 3: Cross multiply
    220,314.88x = 330,055.68 × 126,536.32
  4. Step 4: Simplify right side
    220,314.88x = 41,764,031,142.30
  5. Step 5: Solve for x
    x = 41,764,031,142.30/220,314.88
  6. Step 6: Final answer
    x = 189,565.19

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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.