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Finding the Fourth Proportional to 216,391.71, 298,703.90 and 193,690.65

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Solution

The fourth proportional to 216,391.71, 298,703.90 and 193,690.65 is: 267,367.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,391.71 : 298,703.90 = 193,690.65 : x
  2. Step 2: Convert to fraction form
    216,391.71/298,703.90 = 193,690.65/x
  3. Step 3: Cross multiply
    216,391.71x = 298,703.90 × 193,690.65
  4. Step 4: Simplify right side
    216,391.71x = 57,856,152,548.54
  5. Step 5: Solve for x
    x = 57,856,152,548.54/216,391.71
  6. Step 6: Final answer
    x = 267,367.69

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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.