Home / 280,067.68-386,379.12-171,115.36

Finding the Fourth Proportional to 280,067.68, 386,379.12 and 171,115.36

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Solution

The fourth proportional to 280,067.68, 386,379.12 and 171,115.36 is: 236,069.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,067.68 : 386,379.12 = 171,115.36 : x
  2. Step 2: Convert to fraction form
    280,067.68/386,379.12 = 171,115.36/x
  3. Step 3: Cross multiply
    280,067.68x = 386,379.12 × 171,115.36
  4. Step 4: Simplify right side
    280,067.68x = 66,115,402,215.28
  5. Step 5: Solve for x
    x = 66,115,402,215.28/280,067.68
  6. Step 6: Final answer
    x = 236,069.38

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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.