Home / 214,292.40-321,208.20-81,121.20

Finding the Fourth Proportional to 214,292.40, 321,208.20 and 81,121.20

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Solution

The fourth proportional to 214,292.40, 321,208.20 and 81,121.20 is: 121,594.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,292.40 : 321,208.20 = 81,121.20 : x
  2. Step 2: Convert to fraction form
    214,292.40/321,208.20 = 81,121.20/x
  3. Step 3: Cross multiply
    214,292.40x = 321,208.20 × 81,121.20
  4. Step 4: Simplify right side
    214,292.40x = 26,056,794,633.84
  5. Step 5: Solve for x
    x = 26,056,794,633.84/214,292.40
  6. Step 6: Final answer
    x = 121,594.58

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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.