Home / 320,514.20-480,188.10-261,027.80

Finding the Fourth Proportional to 320,514.20, 480,188.10 and 261,027.80

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Solution

The fourth proportional to 320,514.20, 480,188.10 and 261,027.80 is: 391,066.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,514.20 : 480,188.10 = 261,027.80 : x
  2. Step 2: Convert to fraction form
    320,514.20/480,188.10 = 261,027.80/x
  3. Step 3: Cross multiply
    320,514.20x = 480,188.10 × 261,027.80
  4. Step 4: Simplify right side
    320,514.20x = 125,342,443,329.18
  5. Step 5: Solve for x
    x = 125,342,443,329.18/320,514.20
  6. Step 6: Final answer
    x = 391,066.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.