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Finding the Fourth Proportional to 225,510.73, 311,086.81 and 139,442.20

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Solution

The fourth proportional to 225,510.73, 311,086.81 and 139,442.20 is: 192,357.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,510.73 : 311,086.81 = 139,442.20 : x
  2. Step 2: Convert to fraction form
    225,510.73/311,086.81 = 139,442.20/x
  3. Step 3: Cross multiply
    225,510.73x = 311,086.81 × 139,442.20
  4. Step 4: Simplify right side
    225,510.73x = 43,378,629,177.38
  5. Step 5: Solve for x
    x = 43,378,629,177.38/225,510.73
  6. Step 6: Final answer
    x = 192,357.27

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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.