Home / 214,314.08-321,427.20-81,148.40

Finding the Fourth Proportional to 214,314.08, 321,427.20 and 81,148.40

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Solution

The fourth proportional to 214,314.08, 321,427.20 and 81,148.40 is: 121,705.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,314.08 : 321,427.20 = 81,148.40 : x
  2. Step 2: Convert to fraction form
    214,314.08/321,427.20 = 81,148.40/x
  3. Step 3: Cross multiply
    214,314.08x = 321,427.20 × 81,148.40
  4. Step 4: Simplify right side
    214,314.08x = 26,083,302,996.48
  5. Step 5: Solve for x
    x = 26,083,302,996.48/214,314.08
  6. Step 6: Final answer
    x = 121,705.97

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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.