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Finding the Fourth Proportional to 275,307.62, 412,881.55 and 115,379.37

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Solution

The fourth proportional to 275,307.62, 412,881.55 and 115,379.37 is: 173,035.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,307.62 : 412,881.55 = 115,379.37 : x
  2. Step 2: Convert to fraction form
    275,307.62/412,881.55 = 115,379.37/x
  3. Step 3: Cross multiply
    275,307.62x = 412,881.55 × 115,379.37
  4. Step 4: Simplify right side
    275,307.62x = 47,638,015,226.03
  5. Step 5: Solve for x
    x = 47,638,015,226.03/275,307.62
  6. Step 6: Final answer
    x = 173,035.58

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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.