Home / 214,379.40-321,338.70-81,208.20

Finding the Fourth Proportional to 214,379.40, 321,338.70 and 81,208.20

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Solution

The fourth proportional to 214,379.40, 321,338.70 and 81,208.20 is: 121,725.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,379.40 : 321,338.70 = 81,208.20 : x
  2. Step 2: Convert to fraction form
    214,379.40/321,338.70 = 81,208.20/x
  3. Step 3: Cross multiply
    214,379.40x = 321,338.70 × 81,208.20
  4. Step 4: Simplify right side
    214,379.40x = 26,095,337,417.34
  5. Step 5: Solve for x
    x = 26,095,337,417.34/214,379.40
  6. Step 6: Final answer
    x = 121,725.02

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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.