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Finding the Fourth Proportional to 401,338.86, 553,872.51 and 222,490.86

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Solution

The fourth proportional to 401,338.86, 553,872.51 and 222,490.86 is: 307,051.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,338.86 : 553,872.51 = 222,490.86 : x
  2. Step 2: Convert to fraction form
    401,338.86/553,872.51 = 222,490.86/x
  3. Step 3: Cross multiply
    401,338.86x = 553,872.51 × 222,490.86
  4. Step 4: Simplify right side
    401,338.86x = 123,231,571,080.26
  5. Step 5: Solve for x
    x = 123,231,571,080.26/401,338.86
  6. Step 6: Final answer
    x = 307,051.18

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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.