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Finding the Fourth Proportional to 306,331.67, 422,705.34 and 170,343.65

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Solution

The fourth proportional to 306,331.67, 422,705.34 and 170,343.65 is: 235,056.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,331.67 : 422,705.34 = 170,343.65 : x
  2. Step 2: Convert to fraction form
    306,331.67/422,705.34 = 170,343.65/x
  3. Step 3: Cross multiply
    306,331.67x = 422,705.34 × 170,343.65
  4. Step 4: Simplify right side
    306,331.67x = 72,005,171,546.85
  5. Step 5: Solve for x
    x = 72,005,171,546.85/306,331.67
  6. Step 6: Final answer
    x = 235,056.24

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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.