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Finding the Fourth Proportional to 300,123.87, 450,019.62 and 122,755.44

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Solution

The fourth proportional to 300,123.87, 450,019.62 and 122,755.44 is: 184,065.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,123.87 : 450,019.62 = 122,755.44 : x
  2. Step 2: Convert to fraction form
    300,123.87/450,019.62 = 122,755.44/x
  3. Step 3: Cross multiply
    300,123.87x = 450,019.62 × 122,755.44
  4. Step 4: Simplify right side
    300,123.87x = 55,242,356,461.73
  5. Step 5: Solve for x
    x = 55,242,356,461.73/300,123.87
  6. Step 6: Final answer
    x = 184,065.19

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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.