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Finding the Fourth Proportional to 217,430.92, 300,057.72 and 131,377.96

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Solution

The fourth proportional to 217,430.92, 300,057.72 and 131,377.96 is: 181,303.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,430.92 : 300,057.72 = 131,377.96 : x
  2. Step 2: Convert to fraction form
    217,430.92/300,057.72 = 131,377.96/x
  3. Step 3: Cross multiply
    217,430.92x = 300,057.72 × 131,377.96
  4. Step 4: Simplify right side
    217,430.92x = 39,420,971,135.85
  5. Step 5: Solve for x
    x = 39,420,971,135.85/217,430.92
  6. Step 6: Final answer
    x = 181,303.43

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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.