Home / 320,939.68-442,910.58-177,699.70

Finding the Fourth Proportional to 320,939.68, 442,910.58 and 177,699.70

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Solution

The fourth proportional to 320,939.68, 442,910.58 and 177,699.70 is: 245,233.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,939.68 : 442,910.58 = 177,699.70 : x
  2. Step 2: Convert to fraction form
    320,939.68/442,910.58 = 177,699.70/x
  3. Step 3: Cross multiply
    320,939.68x = 442,910.58 × 177,699.70
  4. Step 4: Simplify right side
    320,939.68x = 78,705,077,192.83
  5. Step 5: Solve for x
    x = 78,705,077,192.83/320,939.68
  6. Step 6: Final answer
    x = 245,233.24

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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.