Home / 214,315.08-321,428.70-81,149.40

Finding the Fourth Proportional to 214,315.08, 321,428.70 and 81,149.40

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Solution

The fourth proportional to 214,315.08, 321,428.70 and 81,149.40 is: 121,707.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,315.08 : 321,428.70 = 81,149.40 : x
  2. Step 2: Convert to fraction form
    214,315.08/321,428.70 = 81,149.40/x
  3. Step 3: Cross multiply
    214,315.08x = 321,428.70 × 81,149.40
  4. Step 4: Simplify right side
    214,315.08x = 26,083,746,147.78
  5. Step 5: Solve for x
    x = 26,083,746,147.78/214,315.08
  6. Step 6: Final answer
    x = 121,707.47

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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.