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Finding the Fourth Proportional to 401,338.36, 553,871.82 and 222,490.36

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Solution

The fourth proportional to 401,338.36, 553,871.82 and 222,490.36 is: 307,050.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,338.36 : 553,871.82 = 222,490.36 : x
  2. Step 2: Convert to fraction form
    401,338.36/553,871.82 = 222,490.36/x
  3. Step 3: Cross multiply
    401,338.36x = 553,871.82 × 222,490.36
  4. Step 4: Simplify right side
    401,338.36x = 123,231,140,625.66
  5. Step 5: Solve for x
    x = 123,231,140,625.66/401,338.36
  6. Step 6: Final answer
    x = 307,050.49

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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.