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Finding the Fourth Proportional to 267,907.37, 401,861.03 and 80,918.87

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Solution

The fourth proportional to 267,907.37, 401,861.03 and 80,918.87 is: 121,378.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,907.37 : 401,861.03 = 80,918.87 : x
  2. Step 2: Convert to fraction form
    267,907.37/401,861.03 = 80,918.87/x
  3. Step 3: Cross multiply
    267,907.37x = 401,861.03 × 80,918.87
  4. Step 4: Simplify right side
    267,907.37x = 32,518,138,030.74
  5. Step 5: Solve for x
    x = 32,518,138,030.74/267,907.37
  6. Step 6: Final answer
    x = 121,378.29

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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.