Home / 280,228.43-386,723.75-159,387.10

Finding the Fourth Proportional to 280,228.43, 386,723.75 and 159,387.10

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Solution

The fourth proportional to 280,228.43, 386,723.75 and 159,387.10 is: 219,959.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,228.43 : 386,723.75 = 159,387.10 : x
  2. Step 2: Convert to fraction form
    280,228.43/386,723.75 = 159,387.10/x
  3. Step 3: Cross multiply
    280,228.43x = 386,723.75 × 159,387.10
  4. Step 4: Simplify right side
    280,228.43x = 61,638,775,249.88
  5. Step 5: Solve for x
    x = 61,638,775,249.88/280,228.43
  6. Step 6: Final answer
    x = 219,959.03

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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.