Home / 343,355.20-515,111.10-106,721.80

Finding the Fourth Proportional to 343,355.20, 515,111.10 and 106,721.80

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Solution

The fourth proportional to 343,355.20, 515,111.10 and 106,721.80 is: 160,107.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,355.20 : 515,111.10 = 106,721.80 : x
  2. Step 2: Convert to fraction form
    343,355.20/515,111.10 = 106,721.80/x
  3. Step 3: Cross multiply
    343,355.20x = 515,111.10 × 106,721.80
  4. Step 4: Simplify right side
    343,355.20x = 54,973,583,791.98
  5. Step 5: Solve for x
    x = 54,973,583,791.98/343,355.20
  6. Step 6: Final answer
    x = 160,107.04

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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.