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Finding the Fourth Proportional to 225,690.65, 311,370.72 and 135,049.22

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Solution

The fourth proportional to 225,690.65, 311,370.72 and 135,049.22 is: 186,318.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,690.65 : 311,370.72 = 135,049.22 : x
  2. Step 2: Convert to fraction form
    225,690.65/311,370.72 = 135,049.22/x
  3. Step 3: Cross multiply
    225,690.65x = 311,370.72 × 135,049.22
  4. Step 4: Simplify right side
    225,690.65x = 42,050,372,866.84
  5. Step 5: Solve for x
    x = 42,050,372,866.84/225,690.65
  6. Step 6: Final answer
    x = 186,318.63

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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.