Home / 257,821.38-386,742.53-122,816.05

Finding the Fourth Proportional to 257,821.38, 386,742.53 and 122,816.05

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Solution

The fourth proportional to 257,821.38, 386,742.53 and 122,816.05 is: 184,229.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,821.38 : 386,742.53 = 122,816.05 : x
  2. Step 2: Convert to fraction form
    257,821.38/386,742.53 = 122,816.05/x
  3. Step 3: Cross multiply
    257,821.38x = 386,742.53 × 122,816.05
  4. Step 4: Simplify right side
    257,821.38x = 47,498,189,241.79
  5. Step 5: Solve for x
    x = 47,498,189,241.79/257,821.38
  6. Step 6: Final answer
    x = 184,229.06

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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.