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Finding the Fourth Proportional to 401,635.74, 554,257.59 and 222,787.74

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Solution

The fourth proportional to 401,635.74, 554,257.59 and 222,787.74 is: 307,447.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,635.74 : 554,257.59 = 222,787.74 : x
  2. Step 2: Convert to fraction form
    401,635.74/554,257.59 = 222,787.74/x
  3. Step 3: Cross multiply
    401,635.74x = 554,257.59 × 222,787.74
  4. Step 4: Simplify right side
    401,635.74x = 123,481,795,853.95
  5. Step 5: Solve for x
    x = 123,481,795,853.95/401,635.74
  6. Step 6: Final answer
    x = 307,447.23

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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.