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Finding the Fourth Proportional to 308,025.47, 424,958.24 and 200,687.51

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Solution

The fourth proportional to 308,025.47, 424,958.24 and 200,687.51 is: 276,872.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,025.47 : 424,958.24 = 200,687.51 : x
  2. Step 2: Convert to fraction form
    308,025.47/424,958.24 = 200,687.51/x
  3. Step 3: Cross multiply
    308,025.47x = 424,958.24 × 200,687.51
  4. Step 4: Simplify right side
    308,025.47x = 85,283,807,911.35
  5. Step 5: Solve for x
    x = 85,283,807,911.35/308,025.47
  6. Step 6: Final answer
    x = 276,872.59

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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.