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Finding the Fourth Proportional to 306,349.10, 422,773.46 and 170,392.90

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Solution

The fourth proportional to 306,349.10, 422,773.46 and 170,392.90 is: 235,148.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,349.10 : 422,773.46 = 170,392.90 : x
  2. Step 2: Convert to fraction form
    306,349.10/422,773.46 = 170,392.90/x
  3. Step 3: Cross multiply
    306,349.10x = 422,773.46 × 170,392.90
  4. Step 4: Simplify right side
    306,349.10x = 72,037,595,892.43
  5. Step 5: Solve for x
    x = 72,037,595,892.43/306,349.10
  6. Step 6: Final answer
    x = 235,148.71

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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.