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Finding the Fourth Proportional to 551,178.39, 826,554.34 and 214,174.68

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Solution

The fourth proportional to 551,178.39, 826,554.34 and 214,174.68 is: 321,179.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,178.39 : 826,554.34 = 214,174.68 : x
  2. Step 2: Convert to fraction form
    551,178.39/826,554.34 = 214,174.68/x
  3. Step 3: Cross multiply
    551,178.39x = 826,554.34 × 214,174.68
  4. Step 4: Simplify right side
    551,178.39x = 177,027,011,272.11
  5. Step 5: Solve for x
    x = 177,027,011,272.11/551,178.39
  6. Step 6: Final answer
    x = 321,179.16

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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.