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Finding the Fourth Proportional to 217,912.02, 300,702.42 and 122,434.62

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Solution

The fourth proportional to 217,912.02, 300,702.42 and 122,434.62 is: 168,950.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,912.02 : 300,702.42 = 122,434.62 : x
  2. Step 2: Convert to fraction form
    217,912.02/300,702.42 = 122,434.62/x
  3. Step 3: Cross multiply
    217,912.02x = 300,702.42 × 122,434.62
  4. Step 4: Simplify right side
    217,912.02x = 36,816,386,525.78
  5. Step 5: Solve for x
    x = 36,816,386,525.78/217,912.02
  6. Step 6: Final answer
    x = 168,950.69

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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.