Home / 281,816.16-388,902.60-154,491.72

Finding the Fourth Proportional to 281,816.16, 388,902.60 and 154,491.72

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Solution

The fourth proportional to 281,816.16, 388,902.60 and 154,491.72 is: 213,196.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,816.16 : 388,902.60 = 154,491.72 : x
  2. Step 2: Convert to fraction form
    281,816.16/388,902.60 = 154,491.72/x
  3. Step 3: Cross multiply
    281,816.16x = 388,902.60 × 154,491.72
  4. Step 4: Simplify right side
    281,816.16x = 60,082,231,586.47
  5. Step 5: Solve for x
    x = 60,082,231,586.47/281,816.16
  6. Step 6: Final answer
    x = 213,196.54

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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.