Home / 280,514.22-386,853.21-219,268.50

Finding the Fourth Proportional to 280,514.22, 386,853.21 and 219,268.50

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Solution

The fourth proportional to 280,514.22, 386,853.21 and 219,268.50 is: 302,390.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,514.22 : 386,853.21 = 219,268.50 : x
  2. Step 2: Convert to fraction form
    280,514.22/386,853.21 = 219,268.50/x
  3. Step 3: Cross multiply
    280,514.22x = 386,853.21 × 219,268.50
  4. Step 4: Simplify right side
    280,514.22x = 84,824,723,076.89
  5. Step 5: Solve for x
    x = 84,824,723,076.89/280,514.22
  6. Step 6: Final answer
    x = 302,390.10

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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.