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Finding the Fourth Proportional to 217,510.92, 300,178.86 and 122,023.80

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Solution

The fourth proportional to 217,510.92, 300,178.86 and 122,023.80 is: 168,400.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,510.92 : 300,178.86 = 122,023.80 : x
  2. Step 2: Convert to fraction form
    217,510.92/300,178.86 = 122,023.80/x
  3. Step 3: Cross multiply
    217,510.92x = 300,178.86 × 122,023.80
  4. Step 4: Simplify right side
    217,510.92x = 36,628,965,176.87
  5. Step 5: Solve for x
    x = 36,628,965,176.87/217,510.92
  6. Step 6: Final answer
    x = 168,400.58

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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.