Home / 215,347.41-323,151.83-80,509.66

Finding the Fourth Proportional to 215,347.41, 323,151.83 and 80,509.66

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Solution

The fourth proportional to 215,347.41, 323,151.83 and 80,509.66 is: 120,813.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,347.41 : 323,151.83 = 80,509.66 : x
  2. Step 2: Convert to fraction form
    215,347.41/323,151.83 = 80,509.66/x
  3. Step 3: Cross multiply
    215,347.41x = 323,151.83 × 80,509.66
  4. Step 4: Simplify right side
    215,347.41x = 26,016,843,961.68
  5. Step 5: Solve for x
    x = 26,016,843,961.68/215,347.41
  6. Step 6: Final answer
    x = 120,813.36

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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.