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Finding the Fourth Proportional to 404,223.55, 605,754.06 and 278,006.31

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Solution

The fourth proportional to 404,223.55, 605,754.06 and 278,006.31 is: 416,609.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,223.55 : 605,754.06 = 278,006.31 : x
  2. Step 2: Convert to fraction form
    404,223.55/605,754.06 = 278,006.31/x
  3. Step 3: Cross multiply
    404,223.55x = 605,754.06 × 278,006.31
  4. Step 4: Simplify right side
    404,223.55x = 168,403,454,651.32
  5. Step 5: Solve for x
    x = 168,403,454,651.32/404,223.55
  6. Step 6: Final answer
    x = 416,609.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.