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Finding the Fourth Proportional to 225,879.41, 311,661.32 and 135,200.93

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Solution

The fourth proportional to 225,879.41, 311,661.32 and 135,200.93 is: 186,545.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,879.41 : 311,661.32 = 135,200.93 : x
  2. Step 2: Convert to fraction form
    225,879.41/311,661.32 = 135,200.93/x
  3. Step 3: Cross multiply
    225,879.41x = 311,661.32 × 135,200.93
  4. Step 4: Simplify right side
    225,879.41x = 42,136,898,074.72
  5. Step 5: Solve for x
    x = 42,136,898,074.72/225,879.41
  6. Step 6: Final answer
    x = 186,545.99

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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.