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Finding the Fourth Proportional to 281,817.27, 388,916.79 and 154,491.75

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Solution

The fourth proportional to 281,817.27, 388,916.79 and 154,491.75 is: 213,203.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,817.27 : 388,916.79 = 154,491.75 : x
  2. Step 2: Convert to fraction form
    281,817.27/388,916.79 = 154,491.75/x
  3. Step 3: Cross multiply
    281,817.27x = 388,916.79 × 154,491.75
  4. Step 4: Simplify right side
    281,817.27x = 60,084,435,491.48
  5. Step 5: Solve for x
    x = 60,084,435,491.48/281,817.27
  6. Step 6: Final answer
    x = 213,203.53

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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.