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Finding the Fourth Proportional to 273,309.10, 409,635.60 and 140,120.80

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Solution

The fourth proportional to 273,309.10, 409,635.60 and 140,120.80 is: 210,013.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,309.10 : 409,635.60 = 140,120.80 : x
  2. Step 2: Convert to fraction form
    273,309.10/409,635.60 = 140,120.80/x
  3. Step 3: Cross multiply
    273,309.10x = 409,635.60 × 140,120.80
  4. Step 4: Simplify right side
    273,309.10x = 57,398,467,980.48
  5. Step 5: Solve for x
    x = 57,398,467,980.48/273,309.10
  6. Step 6: Final answer
    x = 210,013.01

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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.