Home / 306,345.22-422,693.90-178,996.18

Finding the Fourth Proportional to 306,345.22, 422,693.90 and 178,996.18

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Solution

The fourth proportional to 306,345.22, 422,693.90 and 178,996.18 is: 246,978.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,345.22 : 422,693.90 = 178,996.18 : x
  2. Step 2: Convert to fraction form
    306,345.22/422,693.90 = 178,996.18/x
  3. Step 3: Cross multiply
    306,345.22x = 422,693.90 × 178,996.18
  4. Step 4: Simplify right side
    306,345.22x = 75,660,593,409.30
  5. Step 5: Solve for x
    x = 75,660,593,409.30/306,345.22
  6. Step 6: Final answer
    x = 246,978.21

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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.