Home / 321,209.07-443,250-177,960.57

Finding the Fourth Proportional to 321,209.07, 443,250 and 177,960.57

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Solution

The fourth proportional to 321,209.07, 443,250 and 177,960.57 is: 245,575.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,209.07 : 443,250 = 177,960.57 : x
  2. Step 2: Convert to fraction form
    321,209.07/443,250 = 177,960.57/x
  3. Step 3: Cross multiply
    321,209.07x = 443,250 × 177,960.57
  4. Step 4: Simplify right side
    321,209.07x = 78,881,022,652.50
  5. Step 5: Solve for x
    x = 78,881,022,652.50/321,209.07
  6. Step 6: Final answer
    x = 245,575.33

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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.