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Finding the Fourth Proportional to 306,219.56, 422,601.98 and 170,254.60

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Solution

The fourth proportional to 306,219.56, 422,601.98 and 170,254.60 is: 234,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,219.56 : 422,601.98 = 170,254.60 : x
  2. Step 2: Convert to fraction form
    306,219.56/422,601.98 = 170,254.60/x
  3. Step 3: Cross multiply
    306,219.56x = 422,601.98 × 170,254.60
  4. Step 4: Simplify right side
    306,219.56x = 71,949,931,064.11
  5. Step 5: Solve for x
    x = 71,949,931,064.11/306,219.56
  6. Step 6: Final answer
    x = 234,961.90

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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.