Home / 214,639.57-321,959.08-81,519.58

Finding the Fourth Proportional to 214,639.57, 321,959.08 and 81,519.58

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Solution

The fourth proportional to 214,639.57, 321,959.08 and 81,519.58 is: 122,279.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,639.57 : 321,959.08 = 81,519.58 : x
  2. Step 2: Convert to fraction form
    214,639.57/321,959.08 = 81,519.58/x
  3. Step 3: Cross multiply
    214,639.57x = 321,959.08 × 81,519.58
  4. Step 4: Simplify right side
    214,639.57x = 26,245,968,978.79
  5. Step 5: Solve for x
    x = 26,245,968,978.79/214,639.57
  6. Step 6: Final answer
    x = 122,279.27

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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.