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Finding the Fourth Proportional to 403,958, 557,458.98 and 222,669.92

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Solution

The fourth proportional to 403,958, 557,458.98 and 222,669.92 is: 307,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,958 : 557,458.98 = 222,669.92 : x
  2. Step 2: Convert to fraction form
    403,958/557,458.98 = 222,669.92/x
  3. Step 3: Cross multiply
    403,958x = 557,458.98 × 222,669.92
  4. Step 4: Simplify right side
    403,958x = 124,129,346,479.88
  5. Step 5: Solve for x
    x = 124,129,346,479.88/403,958
  6. Step 6: Final answer
    x = 307,282.80

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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.