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Finding the Fourth Proportional to 308,224.78, 425,230.05 and 193,436.44

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Solution

The fourth proportional to 308,224.78, 425,230.05 and 193,436.44 is: 266,866.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,224.78 : 425,230.05 = 193,436.44 : x
  2. Step 2: Convert to fraction form
    308,224.78/425,230.05 = 193,436.44/x
  3. Step 3: Cross multiply
    308,224.78x = 425,230.05 × 193,436.44
  4. Step 4: Simplify right side
    308,224.78x = 82,254,985,989.95
  5. Step 5: Solve for x
    x = 82,254,985,989.95/308,224.78
  6. Step 6: Final answer
    x = 266,866.88

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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.