Home / 279,739.12-386,185.96-218,353.50

Finding the Fourth Proportional to 279,739.12, 386,185.96 and 218,353.50

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Solution

The fourth proportional to 279,739.12, 386,185.96 and 218,353.50 is: 301,441.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,739.12 : 386,185.96 = 218,353.50 : x
  2. Step 2: Convert to fraction form
    279,739.12/386,185.96 = 218,353.50/x
  3. Step 3: Cross multiply
    279,739.12x = 386,185.96 × 218,353.50
  4. Step 4: Simplify right side
    279,739.12x = 84,325,056,016.86
  5. Step 5: Solve for x
    x = 84,325,056,016.86/279,739.12
  6. Step 6: Final answer
    x = 301,441.77

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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.