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Finding the Fourth Proportional to 202,913.37, 304,369.81 and 81,388.77

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Solution

The fourth proportional to 202,913.37, 304,369.81 and 81,388.77 is: 122,083.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,913.37 : 304,369.81 = 81,388.77 : x
  2. Step 2: Convert to fraction form
    202,913.37/304,369.81 = 81,388.77/x
  3. Step 3: Cross multiply
    202,913.37x = 304,369.81 × 81,388.77
  4. Step 4: Simplify right side
    202,913.37x = 24,772,284,257.56
  5. Step 5: Solve for x
    x = 24,772,284,257.56/202,913.37
  6. Step 6: Final answer
    x = 122,083.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.