Home / 214,576.40-321,634.20-81,405.20

Finding the Fourth Proportional to 214,576.40, 321,634.20 and 81,405.20

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Solution

The fourth proportional to 214,576.40, 321,634.20 and 81,405.20 is: 122,020.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,576.40 : 321,634.20 = 81,405.20 : x
  2. Step 2: Convert to fraction form
    214,576.40/321,634.20 = 81,405.20/x
  3. Step 3: Cross multiply
    214,576.40x = 321,634.20 × 81,405.20
  4. Step 4: Simplify right side
    214,576.40x = 26,182,696,377.84
  5. Step 5: Solve for x
    x = 26,182,696,377.84/214,576.40
  6. Step 6: Final answer
    x = 122,020.39

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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.