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Finding the Fourth Proportional to 404,391.38, 558,040.63 and 220,619.01

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Solution

The fourth proportional to 404,391.38, 558,040.63 and 220,619.01 is: 304,443.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,391.38 : 558,040.63 = 220,619.01 : x
  2. Step 2: Convert to fraction form
    404,391.38/558,040.63 = 220,619.01/x
  3. Step 3: Cross multiply
    404,391.38x = 558,040.63 × 220,619.01
  4. Step 4: Simplify right side
    404,391.38x = 123,114,371,330.38
  5. Step 5: Solve for x
    x = 123,114,371,330.38/404,391.38
  6. Step 6: Final answer
    x = 304,443.61

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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.