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Finding the Fourth Proportional to 225,888.99, 311,730.96 and 123,919.65

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Solution

The fourth proportional to 225,888.99, 311,730.96 and 123,919.65 is: 171,011.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,888.99 : 311,730.96 = 123,919.65 : x
  2. Step 2: Convert to fraction form
    225,888.99/311,730.96 = 123,919.65/x
  3. Step 3: Cross multiply
    225,888.99x = 311,730.96 × 123,919.65
  4. Step 4: Simplify right side
    225,888.99x = 38,629,591,457.36
  5. Step 5: Solve for x
    x = 38,629,591,457.36/225,888.99
  6. Step 6: Final answer
    x = 171,011.40

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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.