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Finding the Fourth Proportional to 551,186.88, 826,616 and 214,279.84

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Solution

The fourth proportional to 551,186.88, 826,616 and 214,279.84 is: 321,355.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,186.88 : 826,616 = 214,279.84 : x
  2. Step 2: Convert to fraction form
    551,186.88/826,616 = 214,279.84/x
  3. Step 3: Cross multiply
    551,186.88x = 826,616 × 214,279.84
  4. Step 4: Simplify right side
    551,186.88x = 177,127,144,221.44
  5. Step 5: Solve for x
    x = 177,127,144,221.44/551,186.88
  6. Step 6: Final answer
    x = 321,355.88

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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.