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Finding the Fourth Proportional to 400,662.53, 552,914.19 and 219,374.42

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Solution

The fourth proportional to 400,662.53, 552,914.19 and 219,374.42 is: 302,736.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,662.53 : 552,914.19 = 219,374.42 : x
  2. Step 2: Convert to fraction form
    400,662.53/552,914.19 = 219,374.42/x
  3. Step 3: Cross multiply
    400,662.53x = 552,914.19 × 219,374.42
  4. Step 4: Simplify right side
    400,662.53x = 121,295,226,976.45
  5. Step 5: Solve for x
    x = 121,295,226,976.45/400,662.53
  6. Step 6: Final answer
    x = 302,736.64

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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.