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Finding the Fourth Proportional to 251,830.62, 377,786.97 and 74,355.57

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Solution

The fourth proportional to 251,830.62, 377,786.97 and 74,355.57 is: 111,545.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,830.62 : 377,786.97 = 74,355.57 : x
  2. Step 2: Convert to fraction form
    251,830.62/377,786.97 = 74,355.57/x
  3. Step 3: Cross multiply
    251,830.62x = 377,786.97 × 74,355.57
  4. Step 4: Simplify right side
    251,830.62x = 28,090,565,492.92
  5. Step 5: Solve for x
    x = 28,090,565,492.92/251,830.62
  6. Step 6: Final answer
    x = 111,545.47

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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.