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Finding the Fourth Proportional to 400,880.17, 553,191.01 and 219,556

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Solution

The fourth proportional to 400,880.17, 553,191.01 and 219,556 is: 302,974.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,880.17 : 553,191.01 = 219,556 : x
  2. Step 2: Convert to fraction form
    400,880.17/553,191.01 = 219,556/x
  3. Step 3: Cross multiply
    400,880.17x = 553,191.01 × 219,556
  4. Step 4: Simplify right side
    400,880.17x = 121,456,405,391.56
  5. Step 5: Solve for x
    x = 121,456,405,391.56/400,880.17
  6. Step 6: Final answer
    x = 302,974.34

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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.