Home / 320,381.20-442,118.24-177,137.60

Finding the Fourth Proportional to 320,381.20, 442,118.24 and 177,137.60

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Solution

The fourth proportional to 320,381.20, 442,118.24 and 177,137.60 is: 244,445.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,381.20 : 442,118.24 = 177,137.60 : x
  2. Step 2: Convert to fraction form
    320,381.20/442,118.24 = 177,137.60/x
  3. Step 3: Cross multiply
    320,381.20x = 442,118.24 × 177,137.60
  4. Step 4: Simplify right side
    320,381.20x = 78,315,763,949.82
  5. Step 5: Solve for x
    x = 78,315,763,949.82/320,381.20
  6. Step 6: Final answer
    x = 244,445.57

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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.