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Finding the Fourth Proportional to 374,080, 515,143.12 and 324,998.93

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Solution

The fourth proportional to 374,080, 515,143.12 and 324,998.93 is: 447,553.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,080 : 515,143.12 = 324,998.93 : x
  2. Step 2: Convert to fraction form
    374,080/515,143.12 = 324,998.93/x
  3. Step 3: Cross multiply
    374,080x = 515,143.12 × 324,998.93
  4. Step 4: Simplify right side
    374,080x = 167,420,962,796.86
  5. Step 5: Solve for x
    x = 167,420,962,796.86/374,080
  6. Step 6: Final answer
    x = 447,553.90

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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.