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Finding the Fourth Proportional to 214,168.88, 321,255.54 and 87,776.69

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Solution

The fourth proportional to 214,168.88, 321,255.54 and 87,776.69 is: 131,665.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,168.88 : 321,255.54 = 87,776.69 : x
  2. Step 2: Convert to fraction form
    214,168.88/321,255.54 = 87,776.69/x
  3. Step 3: Cross multiply
    214,168.88x = 321,255.54 × 87,776.69
  4. Step 4: Simplify right side
    214,168.88x = 28,198,746,339.08
  5. Step 5: Solve for x
    x = 28,198,746,339.08/214,168.88
  6. Step 6: Final answer
    x = 131,665.94

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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.