Home / 320,860.29-442,790.69-177,622.72

Finding the Fourth Proportional to 320,860.29, 442,790.69 and 177,622.72

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Solution

The fourth proportional to 320,860.29, 442,790.69 and 177,622.72 is: 245,121.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,860.29 : 442,790.69 = 177,622.72 : x
  2. Step 2: Convert to fraction form
    320,860.29/442,790.69 = 177,622.72/x
  3. Step 3: Cross multiply
    320,860.29x = 442,790.69 × 177,622.72
  4. Step 4: Simplify right side
    320,860.29x = 78,649,687,192.53
  5. Step 5: Solve for x
    x = 78,649,687,192.53/320,860.29
  6. Step 6: Final answer
    x = 245,121.29

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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.