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Finding the Fourth Proportional to 404,039.78, 557,578.78 and 222,758.74

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Solution

The fourth proportional to 404,039.78, 557,578.78 and 222,758.74 is: 307,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,039.78 : 557,578.78 = 222,758.74 : x
  2. Step 2: Convert to fraction form
    404,039.78/557,578.78 = 222,758.74/x
  3. Step 3: Cross multiply
    404,039.78x = 557,578.78 × 222,758.74
  4. Step 4: Simplify right side
    404,039.78x = 124,205,546,483.54
  5. Step 5: Solve for x
    x = 124,205,546,483.54/404,039.78
  6. Step 6: Final answer
    x = 307,409.20

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1.5x scale

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.