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Finding the Fourth Proportional to 401,462.57, 554,026.14 and 220,163.91

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Solution

The fourth proportional to 401,462.57, 554,026.14 and 220,163.91 is: 303,830.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,462.57 : 554,026.14 = 220,163.91 : x
  2. Step 2: Convert to fraction form
    401,462.57/554,026.14 = 220,163.91/x
  3. Step 3: Cross multiply
    401,462.57x = 554,026.14 × 220,163.91
  4. Step 4: Simplify right side
    401,462.57x = 121,976,560,123.79
  5. Step 5: Solve for x
    x = 121,976,560,123.79/401,462.57
  6. Step 6: Final answer
    x = 303,830.47

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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.