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Finding the Fourth Proportional to 217,759.62, 300,516.71 and 120,970.81

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Solution

The fourth proportional to 217,759.62, 300,516.71 and 120,970.81 is: 166,944.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,759.62 : 300,516.71 = 120,970.81 : x
  2. Step 2: Convert to fraction form
    217,759.62/300,516.71 = 120,970.81/x
  3. Step 3: Cross multiply
    217,759.62x = 300,516.71 × 120,970.81
  4. Step 4: Simplify right side
    217,759.62x = 36,353,748,774.59
  5. Step 5: Solve for x
    x = 36,353,748,774.59/217,759.62
  6. Step 6: Final answer
    x = 166,944.40

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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.