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Finding the Fourth Proportional to 306,221.94, 422,600.34 and 170,269.85

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Solution

The fourth proportional to 306,221.94, 422,600.34 and 170,269.85 is: 234,980.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,221.94 : 422,600.34 = 170,269.85 : x
  2. Step 2: Convert to fraction form
    306,221.94/422,600.34 = 170,269.85/x
  3. Step 3: Cross multiply
    306,221.94x = 422,600.34 × 170,269.85
  4. Step 4: Simplify right side
    306,221.94x = 71,956,094,388.75
  5. Step 5: Solve for x
    x = 71,956,094,388.75/306,221.94
  6. Step 6: Final answer
    x = 234,980.21

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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.