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Finding the Fourth Proportional to 401,991.91, 554,723.98 and 220,702.83

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Solution

The fourth proportional to 401,991.91, 554,723.98 and 220,702.83 is: 304,556.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,991.91 : 554,723.98 = 220,702.83 : x
  2. Step 2: Convert to fraction form
    401,991.91/554,723.98 = 220,702.83/x
  3. Step 3: Cross multiply
    401,991.91x = 554,723.98 × 220,702.83
  4. Step 4: Simplify right side
    401,991.91x = 122,429,151,143.93
  5. Step 5: Solve for x
    x = 122,429,151,143.93/401,991.91
  6. Step 6: Final answer
    x = 304,556.26

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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.