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Finding the Fourth Proportional to 400,379.94, 552,524.30 and 219,091.89

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Solution

The fourth proportional to 400,379.94, 552,524.30 and 219,091.89 is: 302,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,379.94 : 552,524.30 = 219,091.89 : x
  2. Step 2: Convert to fraction form
    400,379.94/552,524.30 = 219,091.89/x
  3. Step 3: Cross multiply
    400,379.94x = 552,524.30 × 219,091.89
  4. Step 4: Simplify right side
    400,379.94x = 121,053,595,679.42
  5. Step 5: Solve for x
    x = 121,053,595,679.42/400,379.94
  6. Step 6: Final answer
    x = 302,346.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.