Home / 320,364.48-442,135.20-177,135.36

Finding the Fourth Proportional to 320,364.48, 442,135.20 and 177,135.36

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Solution

The fourth proportional to 320,364.48, 442,135.20 and 177,135.36 is: 244,464.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,364.48 : 442,135.20 = 177,135.36 : x
  2. Step 2: Convert to fraction form
    320,364.48/442,135.20 = 177,135.36/x
  3. Step 3: Cross multiply
    320,364.48x = 442,135.20 × 177,135.36
  4. Step 4: Simplify right side
    320,364.48x = 78,317,777,820.67
  5. Step 5: Solve for x
    x = 78,317,777,820.67/320,364.48
  6. Step 6: Final answer
    x = 244,464.61

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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.