Home / 427,218.60-640,450.77-161,165.96

Finding the Fourth Proportional to 427,218.60, 640,450.77 and 161,165.96

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Solution

The fourth proportional to 427,218.60, 640,450.77 and 161,165.96 is: 241,606.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,218.60 : 640,450.77 = 161,165.96 : x
  2. Step 2: Convert to fraction form
    427,218.60/640,450.77 = 161,165.96/x
  3. Step 3: Cross multiply
    427,218.60x = 640,450.77 × 161,165.96
  4. Step 4: Simplify right side
    427,218.60x = 103,218,859,977.54
  5. Step 5: Solve for x
    x = 103,218,859,977.54/427,218.60
  6. Step 6: Final answer
    x = 241,606.66

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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.