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Finding the Fourth Proportional to 404,497.09, 558,202.47 and 220,739.29

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Solution

The fourth proportional to 404,497.09, 558,202.47 and 220,739.29 is: 304,618.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,497.09 : 558,202.47 = 220,739.29 : x
  2. Step 2: Convert to fraction form
    404,497.09/558,202.47 = 220,739.29/x
  3. Step 3: Cross multiply
    404,497.09x = 558,202.47 × 220,739.29
  4. Step 4: Simplify right side
    404,497.09x = 123,217,217,747.70
  5. Step 5: Solve for x
    x = 123,217,217,747.70/404,497.09
  6. Step 6: Final answer
    x = 304,618.31

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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.