Home / 214,587.40-321,650.70-81,416.20

Finding the Fourth Proportional to 214,587.40, 321,650.70 and 81,416.20

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Solution

The fourth proportional to 214,587.40, 321,650.70 and 81,416.20 is: 122,036.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,587.40 : 321,650.70 = 81,416.20 : x
  2. Step 2: Convert to fraction form
    214,587.40/321,650.70 = 81,416.20/x
  3. Step 3: Cross multiply
    214,587.40x = 321,650.70 × 81,416.20
  4. Step 4: Simplify right side
    214,587.40x = 26,187,577,721.34
  5. Step 5: Solve for x
    x = 26,187,577,721.34/214,587.40
  6. Step 6: Final answer
    x = 122,036.88

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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.