Home / 320,385.76-442,114.50-177,137.44

Finding the Fourth Proportional to 320,385.76, 442,114.50 and 177,137.44

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Solution

The fourth proportional to 320,385.76, 442,114.50 and 177,137.44 is: 244,439.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,385.76 : 442,114.50 = 177,137.44 : x
  2. Step 2: Convert to fraction form
    320,385.76/442,114.50 = 177,137.44/x
  3. Step 3: Cross multiply
    320,385.76x = 442,114.50 × 177,137.44
  4. Step 4: Simplify right side
    320,385.76x = 78,315,030,716.88
  5. Step 5: Solve for x
    x = 78,315,030,716.88/320,385.76
  6. Step 6: Final answer
    x = 244,439.80

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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.