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Finding the Fourth Proportional to 361,272.60, 541,252.80 and 220,867.20

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Solution

The fourth proportional to 361,272.60, 541,252.80 and 220,867.20 is: 330,899.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,272.60 : 541,252.80 = 220,867.20 : x
  2. Step 2: Convert to fraction form
    361,272.60/541,252.80 = 220,867.20/x
  3. Step 3: Cross multiply
    361,272.60x = 541,252.80 × 220,867.20
  4. Step 4: Simplify right side
    361,272.60x = 119,544,990,428.16
  5. Step 5: Solve for x
    x = 119,544,990,428.16/361,272.60
  6. Step 6: Final answer
    x = 330,899.69

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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.