Home / 398,823.75-550,377.18-229,090.68

Finding the Fourth Proportional to 398,823.75, 550,377.18 and 229,090.68

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Solution

The fourth proportional to 398,823.75, 550,377.18 and 229,090.68 is: 316,145.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,823.75 : 550,377.18 = 229,090.68 : x
  2. Step 2: Convert to fraction form
    398,823.75/550,377.18 = 229,090.68/x
  3. Step 3: Cross multiply
    398,823.75x = 550,377.18 × 229,090.68
  4. Step 4: Simplify right side
    398,823.75x = 126,086,282,422.68
  5. Step 5: Solve for x
    x = 126,086,282,422.68/398,823.75
  6. Step 6: Final answer
    x = 316,145.37

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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.