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Finding the Fourth Proportional to 374,079.77, 515,142.78 and 324,998.69

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Solution

The fourth proportional to 374,079.77, 515,142.78 and 324,998.69 is: 447,553.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,079.77 : 515,142.78 = 324,998.69 : x
  2. Step 2: Convert to fraction form
    374,079.77/515,142.78 = 324,998.69/x
  3. Step 3: Cross multiply
    374,079.77x = 515,142.78 × 324,998.69
  4. Step 4: Simplify right side
    374,079.77x = 167,420,730,713.58
  5. Step 5: Solve for x
    x = 167,420,730,713.58/374,079.77
  6. Step 6: Final answer
    x = 447,553.56

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1.5x scale

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.