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Finding the Fourth Proportional to 251,272.91, 376,742.73 and 91,329.85

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Solution

The fourth proportional to 251,272.91, 376,742.73 and 91,329.85 is: 136,934.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,272.91 : 376,742.73 = 91,329.85 : x
  2. Step 2: Convert to fraction form
    251,272.91/376,742.73 = 91,329.85/x
  3. Step 3: Cross multiply
    251,272.91x = 376,742.73 × 91,329.85
  4. Step 4: Simplify right side
    251,272.91x = 34,407,857,019.49
  5. Step 5: Solve for x
    x = 34,407,857,019.49/251,272.91
  6. Step 6: Final answer
    x = 136,934.21

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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.