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Finding the Fourth Proportional to 343,810, 515,727.96 and 107,151.76

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Solution

The fourth proportional to 343,810, 515,727.96 and 107,151.76 is: 160,731.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,810 : 515,727.96 = 107,151.76 : x
  2. Step 2: Convert to fraction form
    343,810/515,727.96 = 107,151.76/x
  3. Step 3: Cross multiply
    343,810x = 515,727.96 × 107,151.76
  4. Step 4: Simplify right side
    343,810x = 55,261,158,595.21
  5. Step 5: Solve for x
    x = 55,261,158,595.21/343,810
  6. Step 6: Final answer
    x = 160,731.68

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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.