Home / 306,623.82-459,958.80-81,979.32

Finding the Fourth Proportional to 306,623.82, 459,958.80 and 81,979.32

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Solution

The fourth proportional to 306,623.82, 459,958.80 and 81,979.32 is: 122,975.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,623.82 : 459,958.80 = 81,979.32 : x
  2. Step 2: Convert to fraction form
    306,623.82/459,958.80 = 81,979.32/x
  3. Step 3: Cross multiply
    306,623.82x = 459,958.80 × 81,979.32
  4. Step 4: Simplify right side
    306,623.82x = 37,707,109,652.02
  5. Step 5: Solve for x
    x = 37,707,109,652.02/306,623.82
  6. Step 6: Final answer
    x = 122,975.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.