Home / 321,581.40-443,760.30-178,328.04

Finding the Fourth Proportional to 321,581.40, 443,760.30 and 178,328.04

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Solution

The fourth proportional to 321,581.40, 443,760.30 and 178,328.04 is: 246,080.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,581.40 : 443,760.30 = 178,328.04 : x
  2. Step 2: Convert to fraction form
    321,581.40/443,760.30 = 178,328.04/x
  3. Step 3: Cross multiply
    321,581.40x = 443,760.30 × 178,328.04
  4. Step 4: Simplify right side
    321,581.40x = 79,134,904,528.81
  5. Step 5: Solve for x
    x = 79,134,904,528.81/321,581.40
  6. Step 6: Final answer
    x = 246,080.48

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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.