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Finding the Fourth Proportional to 306,346.71, 422,758.80 and 170,377.32

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Solution

The fourth proportional to 306,346.71, 422,758.80 and 170,377.32 is: 235,120.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,346.71 : 422,758.80 = 170,377.32 : x
  2. Step 2: Convert to fraction form
    306,346.71/422,758.80 = 170,377.32/x
  3. Step 3: Cross multiply
    306,346.71x = 422,758.80 × 170,377.32
  4. Step 4: Simplify right side
    306,346.71x = 72,028,511,350.42
  5. Step 5: Solve for x
    x = 72,028,511,350.42/306,346.71
  6. Step 6: Final answer
    x = 235,120.89

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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.