Home / 321,108.21-443,129.31-177,877.53

Finding the Fourth Proportional to 321,108.21, 443,129.31 and 177,877.53

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Solution

The fourth proportional to 321,108.21, 443,129.31 and 177,877.53 is: 245,470.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,108.21 : 443,129.31 = 177,877.53 : x
  2. Step 2: Convert to fraction form
    321,108.21/443,129.31 = 177,877.53/x
  3. Step 3: Cross multiply
    321,108.21x = 443,129.31 × 177,877.53
  4. Step 4: Simplify right side
    321,108.21x = 78,822,747,133.40
  5. Step 5: Solve for x
    x = 78,822,747,133.40/321,108.21
  6. Step 6: Final answer
    x = 245,470.98

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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.