Home / 218,739-301,991.04-143,418.72

Finding the Fourth Proportional to 218,739, 301,991.04 and 143,418.72

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Solution

The fourth proportional to 218,739, 301,991.04 and 143,418.72 is: 198,003.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,739 : 301,991.04 = 143,418.72 : x
  2. Step 2: Convert to fraction form
    218,739/301,991.04 = 143,418.72/x
  3. Step 3: Cross multiply
    218,739x = 301,991.04 × 143,418.72
  4. Step 4: Simplify right side
    218,739x = 43,311,168,408.27
  5. Step 5: Solve for x
    x = 43,311,168,408.27/218,739
  6. Step 6: Final answer
    x = 198,003.87

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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.