Home / 321,909.12-444,213.72-178,669.20

Finding the Fourth Proportional to 321,909.12, 444,213.72 and 178,669.20

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Solution

The fourth proportional to 321,909.12, 444,213.72 and 178,669.20 is: 246,551.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,909.12 : 444,213.72 = 178,669.20 : x
  2. Step 2: Convert to fraction form
    321,909.12/444,213.72 = 178,669.20/x
  3. Step 3: Cross multiply
    321,909.12x = 444,213.72 × 178,669.20
  4. Step 4: Simplify right side
    321,909.12x = 79,367,309,981.42
  5. Step 5: Solve for x
    x = 79,367,309,981.42/321,909.12
  6. Step 6: Final answer
    x = 246,551.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.