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Finding the Fourth Proportional to 217,550.87, 300,215.55 and 120,749.08

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Solution

The fourth proportional to 217,550.87, 300,215.55 and 120,749.08 is: 166,631.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,550.87 : 300,215.55 = 120,749.08 : x
  2. Step 2: Convert to fraction form
    217,550.87/300,215.55 = 120,749.08/x
  3. Step 3: Cross multiply
    217,550.87x = 300,215.55 × 120,749.08
  4. Step 4: Simplify right side
    217,550.87x = 36,250,750,795.45
  5. Step 5: Solve for x
    x = 36,250,750,795.45/217,550.87
  6. Step 6: Final answer
    x = 166,631.15

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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.