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Finding the Fourth Proportional to 361,383.68, 542,076.71 and 91,511.67

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Solution

The fourth proportional to 361,383.68, 542,076.71 and 91,511.67 is: 137,267.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,383.68 : 542,076.71 = 91,511.67 : x
  2. Step 2: Convert to fraction form
    361,383.68/542,076.71 = 91,511.67/x
  3. Step 3: Cross multiply
    361,383.68x = 542,076.71 × 91,511.67
  4. Step 4: Simplify right side
    361,383.68x = 49,606,347,154.53
  5. Step 5: Solve for x
    x = 49,606,347,154.53/361,383.68
  6. Step 6: Final answer
    x = 137,267.81

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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.