Home / 280,764.58-387,345.21-173,147.80

Finding the Fourth Proportional to 280,764.58, 387,345.21 and 173,147.80

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Solution

The fourth proportional to 280,764.58, 387,345.21 and 173,147.80 is: 238,876.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,764.58 : 387,345.21 = 173,147.80 : x
  2. Step 2: Convert to fraction form
    280,764.58/387,345.21 = 173,147.80/x
  3. Step 3: Cross multiply
    280,764.58x = 387,345.21 × 173,147.80
  4. Step 4: Simplify right side
    280,764.58x = 67,067,970,952.04
  5. Step 5: Solve for x
    x = 67,067,970,952.04/280,764.58
  6. Step 6: Final answer
    x = 238,876.18

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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.