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Finding the Fourth Proportional to 290,860.80, 401,586.72 and 222,757.44

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Solution

The fourth proportional to 290,860.80, 401,586.72 and 222,757.44 is: 307,557.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,860.80 : 401,586.72 = 222,757.44 : x
  2. Step 2: Convert to fraction form
    290,860.80/401,586.72 = 222,757.44/x
  3. Step 3: Cross multiply
    290,860.80x = 401,586.72 × 222,757.44
  4. Step 4: Simplify right side
    290,860.80x = 89,456,429,685.20
  5. Step 5: Solve for x
    x = 89,456,429,685.20/290,860.80
  6. Step 6: Final answer
    x = 307,557.53

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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.