Home / 320,440.15-442,107.52-213,028.38

Finding the Fourth Proportional to 320,440.15, 442,107.52 and 213,028.38

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Solution

The fourth proportional to 320,440.15, 442,107.52 and 213,028.38 is: 293,912.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,440.15 : 442,107.52 = 213,028.38 : x
  2. Step 2: Convert to fraction form
    320,440.15/442,107.52 = 213,028.38/x
  3. Step 3: Cross multiply
    320,440.15x = 442,107.52 × 213,028.38
  4. Step 4: Simplify right side
    320,440.15x = 94,181,448,238.85
  5. Step 5: Solve for x
    x = 94,181,448,238.85/320,440.15
  6. Step 6: Final answer
    x = 293,912.76

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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.