Home / 321,518.30-443,715.19-178,278.34

Finding the Fourth Proportional to 321,518.30, 443,715.19 and 178,278.34

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Solution

The fourth proportional to 321,518.30, 443,715.19 and 178,278.34 is: 246,035.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,518.30 : 443,715.19 = 178,278.34 : x
  2. Step 2: Convert to fraction form
    321,518.30/443,715.19 = 178,278.34/x
  3. Step 3: Cross multiply
    321,518.30x = 443,715.19 × 178,278.34
  4. Step 4: Simplify right side
    321,518.30x = 79,104,805,287.41
  5. Step 5: Solve for x
    x = 79,104,805,287.41/321,518.30
  6. Step 6: Final answer
    x = 246,035.16

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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.