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Finding the Fourth Proportional to 401,060.75, 553,463.85 and 222,212.75

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Solution

The fourth proportional to 401,060.75, 553,463.85 and 222,212.75 is: 306,653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,060.75 : 553,463.85 = 222,212.75 : x
  2. Step 2: Convert to fraction form
    401,060.75/553,463.85 = 222,212.75/x
  3. Step 3: Cross multiply
    401,060.75x = 553,463.85 × 222,212.75
  4. Step 4: Simplify right side
    401,060.75x = 122,986,724,134.09
  5. Step 5: Solve for x
    x = 122,986,724,134.09/401,060.75
  6. Step 6: Final answer
    x = 306,653.60

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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.