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Finding the Fourth Proportional to 401,963.82, 554,711.55 and 220,694.31

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Solution

The fourth proportional to 401,963.82, 554,711.55 and 220,694.31 is: 304,558.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,963.82 : 554,711.55 = 220,694.31 : x
  2. Step 2: Convert to fraction form
    401,963.82/554,711.55 = 220,694.31/x
  3. Step 3: Cross multiply
    401,963.82x = 554,711.55 × 220,694.31
  4. Step 4: Simplify right side
    401,963.82x = 122,421,682,776.28
  5. Step 5: Solve for x
    x = 122,421,682,776.28/401,963.82
  6. Step 6: Final answer
    x = 304,558.96

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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.