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Finding the Fourth Proportional to 306,959.73, 423,617.19 and 170,993.64

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Solution

The fourth proportional to 306,959.73, 423,617.19 and 170,993.64 is: 235,978.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,959.73 : 423,617.19 = 170,993.64 : x
  2. Step 2: Convert to fraction form
    306,959.73/423,617.19 = 170,993.64/x
  3. Step 3: Cross multiply
    306,959.73x = 423,617.19 × 170,993.64
  4. Step 4: Simplify right side
    306,959.73x = 72,435,843,054.88
  5. Step 5: Solve for x
    x = 72,435,843,054.88/306,959.73
  6. Step 6: Final answer
    x = 235,978.33

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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.