Home / 321,117.21-443,142.09-177,874.25

Finding the Fourth Proportional to 321,117.21, 443,142.09 and 177,874.25

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Solution

The fourth proportional to 321,117.21, 443,142.09 and 177,874.25 is: 245,466.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,117.21 : 443,142.09 = 177,874.25 : x
  2. Step 2: Convert to fraction form
    321,117.21/443,142.09 = 177,874.25/x
  3. Step 3: Cross multiply
    321,117.21x = 443,142.09 × 177,874.25
  4. Step 4: Simplify right side
    321,117.21x = 78,823,564,686.47
  5. Step 5: Solve for x
    x = 78,823,564,686.47/321,117.21
  6. Step 6: Final answer
    x = 245,466.65

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1.5x scale

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.