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Finding the Fourth Proportional to 221,801.53, 332,807.19 and 115,128.77

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Solution

The fourth proportional to 221,801.53, 332,807.19 and 115,128.77 is: 172,747.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,801.53 : 332,807.19 = 115,128.77 : x
  2. Step 2: Convert to fraction form
    221,801.53/332,807.19 = 115,128.77/x
  3. Step 3: Cross multiply
    221,801.53x = 332,807.19 × 115,128.77
  4. Step 4: Simplify right side
    221,801.53x = 38,315,682,431.86
  5. Step 5: Solve for x
    x = 38,315,682,431.86/221,801.53
  6. Step 6: Final answer
    x = 172,747.60

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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.