Home / 307,788.18-461,844.78-218,408.48

Finding the Fourth Proportional to 307,788.18, 461,844.78 and 218,408.48

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Solution

The fourth proportional to 307,788.18, 461,844.78 and 218,408.48 is: 327,728.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,788.18 : 461,844.78 = 218,408.48 : x
  2. Step 2: Convert to fraction form
    307,788.18/461,844.78 = 218,408.48/x
  3. Step 3: Cross multiply
    307,788.18x = 461,844.78 × 218,408.48
  4. Step 4: Simplify right side
    307,788.18x = 100,870,814,999.40
  5. Step 5: Solve for x
    x = 100,870,814,999.40/307,788.18
  6. Step 6: Final answer
    x = 327,728.04

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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.