Home / 219,003.20-328,408.80-100,635.20

Finding the Fourth Proportional to 219,003.20, 328,408.80 and 100,635.20

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Solution

The fourth proportional to 219,003.20, 328,408.80 and 100,635.20 is: 150,908.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,003.20 : 328,408.80 = 100,635.20 : x
  2. Step 2: Convert to fraction form
    219,003.20/328,408.80 = 100,635.20/x
  3. Step 3: Cross multiply
    219,003.20x = 328,408.80 × 100,635.20
  4. Step 4: Simplify right side
    219,003.20x = 33,049,485,269.76
  5. Step 5: Solve for x
    x = 33,049,485,269.76/219,003.20
  6. Step 6: Final answer
    x = 150,908.69

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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.