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Finding the Fourth Proportional to 400,380.45, 552,524.99 and 219,092.40

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Solution

The fourth proportional to 400,380.45, 552,524.99 and 219,092.40 is: 302,347.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,380.45 : 552,524.99 = 219,092.40 : x
  2. Step 2: Convert to fraction form
    400,380.45/552,524.99 = 219,092.40/x
  3. Step 3: Cross multiply
    400,380.45x = 552,524.99 × 219,092.40
  4. Step 4: Simplify right side
    400,380.45x = 121,054,023,356.45
  5. Step 5: Solve for x
    x = 121,054,023,356.45/400,380.45
  6. Step 6: Final answer
    x = 302,347.49

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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.