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Finding the Fourth Proportional to 401,366.96, 553,891.76 and 220,078.44

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Solution

The fourth proportional to 401,366.96, 553,891.76 and 220,078.44 is: 303,711.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,366.96 : 553,891.76 = 220,078.44 : x
  2. Step 2: Convert to fraction form
    401,366.96/553,891.76 = 220,078.44/x
  3. Step 3: Cross multiply
    401,366.96x = 553,891.76 × 220,078.44
  4. Step 4: Simplify right side
    401,366.96x = 121,899,634,469.65
  5. Step 5: Solve for x
    x = 121,899,634,469.65/401,366.96
  6. Step 6: Final answer
    x = 303,711.18

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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.