Home / 386,979.30-580,635.30-200,122.02

Finding the Fourth Proportional to 386,979.30, 580,635.30 and 200,122.02

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Solution

The fourth proportional to 386,979.30, 580,635.30 and 200,122.02 is: 300,269.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,979.30 : 580,635.30 = 200,122.02 : x
  2. Step 2: Convert to fraction form
    386,979.30/580,635.30 = 200,122.02/x
  3. Step 3: Cross multiply
    386,979.30x = 580,635.30 × 200,122.02
  4. Step 4: Simplify right side
    386,979.30x = 116,197,909,119.31
  5. Step 5: Solve for x
    x = 116,197,909,119.31/386,979.30
  6. Step 6: Final answer
    x = 300,269.06

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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.