Home / 398,936.68-550,478.04-229,170.76

Finding the Fourth Proportional to 398,936.68, 550,478.04 and 229,170.76

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Solution

The fourth proportional to 398,936.68, 550,478.04 and 229,170.76 is: 316,224.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,936.68 : 550,478.04 = 229,170.76 : x
  2. Step 2: Convert to fraction form
    398,936.68/550,478.04 = 229,170.76/x
  3. Step 3: Cross multiply
    398,936.68x = 550,478.04 × 229,170.76
  4. Step 4: Simplify right side
    398,936.68x = 126,153,470,790.11
  5. Step 5: Solve for x
    x = 126,153,470,790.11/398,936.68
  6. Step 6: Final answer
    x = 316,224.30

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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.