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Finding the Fourth Proportional to 485,471.22, 669,936.34 and 270,606.67

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Solution

The fourth proportional to 485,471.22, 669,936.34 and 270,606.67 is: 373,429.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,471.22 : 669,936.34 = 270,606.67 : x
  2. Step 2: Convert to fraction form
    485,471.22/669,936.34 = 270,606.67/x
  3. Step 3: Cross multiply
    485,471.22x = 669,936.34 × 270,606.67
  4. Step 4: Simplify right side
    485,471.22x = 181,289,242,989.04
  5. Step 5: Solve for x
    x = 181,289,242,989.04/485,471.22
  6. Step 6: Final answer
    x = 373,429.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.