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Finding the Fourth Proportional to 356,436.40, 491,863.43 and 203,468.51

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Solution

The fourth proportional to 356,436.40, 491,863.43 and 203,468.51 is: 280,775.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,436.40 : 491,863.43 = 203,468.51 : x
  2. Step 2: Convert to fraction form
    356,436.40/491,863.43 = 203,468.51/x
  3. Step 3: Cross multiply
    356,436.40x = 491,863.43 × 203,468.51
  4. Step 4: Simplify right side
    356,436.40x = 100,078,718,208.25
  5. Step 5: Solve for x
    x = 100,078,718,208.25/356,436.40
  6. Step 6: Final answer
    x = 280,775.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.