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Finding the Fourth Proportional to 225,491.40, 311,174.72 and 123,516.04

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Solution

The fourth proportional to 225,491.40, 311,174.72 and 123,516.04 is: 170,450.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,491.40 : 311,174.72 = 123,516.04 : x
  2. Step 2: Convert to fraction form
    225,491.40/311,174.72 = 123,516.04/x
  3. Step 3: Cross multiply
    225,491.40x = 311,174.72 × 123,516.04
  4. Step 4: Simplify right side
    225,491.40x = 38,435,069,162.51
  5. Step 5: Solve for x
    x = 38,435,069,162.51/225,491.40
  6. Step 6: Final answer
    x = 170,450.27

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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.