Home / 217,679.46-300,395.16-122,183.70

Finding the Fourth Proportional to 217,679.46, 300,395.16 and 122,183.70

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Solution

The fourth proportional to 217,679.46, 300,395.16 and 122,183.70 is: 168,612.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,679.46 : 300,395.16 = 122,183.70 : x
  2. Step 2: Convert to fraction form
    217,679.46/300,395.16 = 122,183.70/x
  3. Step 3: Cross multiply
    217,679.46x = 300,395.16 × 122,183.70
  4. Step 4: Simplify right side
    217,679.46x = 36,703,392,110.89
  5. Step 5: Solve for x
    x = 36,703,392,110.89/217,679.46
  6. Step 6: Final answer
    x = 168,612.11

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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.