Home / 217,667.54-300,378.21-122,172.50

Finding the Fourth Proportional to 217,667.54, 300,378.21 and 122,172.50

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Solution

The fourth proportional to 217,667.54, 300,378.21 and 122,172.50 is: 168,596.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,667.54 : 300,378.21 = 122,172.50 : x
  2. Step 2: Convert to fraction form
    217,667.54/300,378.21 = 122,172.50/x
  3. Step 3: Cross multiply
    217,667.54x = 300,378.21 × 122,172.50
  4. Step 4: Simplify right side
    217,667.54x = 36,697,956,861.23
  5. Step 5: Solve for x
    x = 36,697,956,861.23/217,667.54
  6. Step 6: Final answer
    x = 168,596.37

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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.