Home / 320,857.66-442,787.07-177,620.23

Finding the Fourth Proportional to 320,857.66, 442,787.07 and 177,620.23

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Solution

The fourth proportional to 320,857.66, 442,787.07 and 177,620.23 is: 245,117.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,857.66 : 442,787.07 = 177,620.23 : x
  2. Step 2: Convert to fraction form
    320,857.66/442,787.07 = 177,620.23/x
  3. Step 3: Cross multiply
    320,857.66x = 442,787.07 × 177,620.23
  4. Step 4: Simplify right side
    320,857.66x = 78,647,941,214.43
  5. Step 5: Solve for x
    x = 78,647,941,214.43/320,857.66
  6. Step 6: Final answer
    x = 245,117.85

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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.