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Finding the Fourth Proportional to 210,532.35, 315,799.90 and 84,183.21

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Solution

The fourth proportional to 210,532.35, 315,799.90 and 84,183.21 is: 126,275.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,532.35 : 315,799.90 = 84,183.21 : x
  2. Step 2: Convert to fraction form
    210,532.35/315,799.90 = 84,183.21/x
  3. Step 3: Cross multiply
    210,532.35x = 315,799.90 × 84,183.21
  4. Step 4: Simplify right side
    210,532.35x = 26,585,049,299.68
  5. Step 5: Solve for x
    x = 26,585,049,299.68/210,532.35
  6. Step 6: Final answer
    x = 126,275.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.