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Finding the Fourth Proportional to 367,396.75, 551,129.90 and 142,774.50

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Solution

The fourth proportional to 367,396.75, 551,129.90 and 142,774.50 is: 214,175.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,396.75 : 551,129.90 = 142,774.50 : x
  2. Step 2: Convert to fraction form
    367,396.75/551,129.90 = 142,774.50/x
  3. Step 3: Cross multiply
    367,396.75x = 551,129.90 × 142,774.50
  4. Step 4: Simplify right side
    367,396.75x = 78,687,295,907.55
  5. Step 5: Solve for x
    x = 78,687,295,907.55/367,396.75
  6. Step 6: Final answer
    x = 214,175.26

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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.