Home / 214,306.08-321,415.20-81,140.40

Finding the Fourth Proportional to 214,306.08, 321,415.20 and 81,140.40

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Solution

The fourth proportional to 214,306.08, 321,415.20 and 81,140.40 is: 121,693.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,306.08 : 321,415.20 = 81,140.40 : x
  2. Step 2: Convert to fraction form
    214,306.08/321,415.20 = 81,140.40/x
  3. Step 3: Cross multiply
    214,306.08x = 321,415.20 × 81,140.40
  4. Step 4: Simplify right side
    214,306.08x = 26,079,757,894.08
  5. Step 5: Solve for x
    x = 26,079,757,894.08/214,306.08
  6. Step 6: Final answer
    x = 121,693.97

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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.