Home / 320,067.12-441,662.40-205,142.88

Finding the Fourth Proportional to 320,067.12, 441,662.40 and 205,142.88

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Solution

The fourth proportional to 320,067.12, 441,662.40 and 205,142.88 is: 283,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,067.12 : 441,662.40 = 205,142.88 : x
  2. Step 2: Convert to fraction form
    320,067.12/441,662.40 = 205,142.88/x
  3. Step 3: Cross multiply
    320,067.12x = 441,662.40 × 205,142.88
  4. Step 4: Simplify right side
    320,067.12x = 90,603,896,723.71
  5. Step 5: Solve for x
    x = 90,603,896,723.71/320,067.12
  6. Step 6: Final answer
    x = 283,077.80

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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.