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Finding the Fourth Proportional to 216,745.62, 298,979.01 and 137,257.62

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Solution

The fourth proportional to 216,745.62, 298,979.01 and 137,257.62 is: 189,333.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,745.62 : 298,979.01 = 137,257.62 : x
  2. Step 2: Convert to fraction form
    216,745.62/298,979.01 = 137,257.62/x
  3. Step 3: Cross multiply
    216,745.62x = 298,979.01 × 137,257.62
  4. Step 4: Simplify right side
    216,745.62x = 41,037,147,342.56
  5. Step 5: Solve for x
    x = 41,037,147,342.56/216,745.62
  6. Step 6: Final answer
    x = 189,333.23

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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.