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Finding the Fourth Proportional to 306,331.96, 422,713.58 and 170,366.16

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Solution

The fourth proportional to 306,331.96, 422,713.58 and 170,366.16 is: 235,091.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,331.96 : 422,713.58 = 170,366.16 : x
  2. Step 2: Convert to fraction form
    306,331.96/422,713.58 = 170,366.16/x
  3. Step 3: Cross multiply
    306,331.96x = 422,713.58 × 170,366.16
  4. Step 4: Simplify right side
    306,331.96x = 72,016,089,404.45
  5. Step 5: Solve for x
    x = 72,016,089,404.45/306,331.96
  6. Step 6: Final answer
    x = 235,091.66

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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.