Home / 320,717.04-442,297.10-275,380.80

Finding the Fourth Proportional to 320,717.04, 442,297.10 and 275,380.80

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Solution

The fourth proportional to 320,717.04, 442,297.10 and 275,380.80 is: 379,774.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,717.04 : 442,297.10 = 275,380.80 : x
  2. Step 2: Convert to fraction form
    320,717.04/442,297.10 = 275,380.80/x
  3. Step 3: Cross multiply
    320,717.04x = 442,297.10 × 275,380.80
  4. Step 4: Simplify right side
    320,717.04x = 121,800,129,235.68
  5. Step 5: Solve for x
    x = 121,800,129,235.68/320,717.04
  6. Step 6: Final answer
    x = 379,774.42

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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.