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Finding the Fourth Proportional to 300,802.78, 451,181.61 and 87,572.33

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Solution

The fourth proportional to 300,802.78, 451,181.61 and 87,572.33 is: 131,351.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,802.78 : 451,181.61 = 87,572.33 : x
  2. Step 2: Convert to fraction form
    300,802.78/451,181.61 = 87,572.33/x
  3. Step 3: Cross multiply
    300,802.78x = 451,181.61 × 87,572.33
  4. Step 4: Simplify right side
    300,802.78x = 39,511,024,840.85
  5. Step 5: Solve for x
    x = 39,511,024,840.85/300,802.78
  6. Step 6: Final answer
    x = 131,351.93

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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.