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Finding the Fourth Proportional to 375,361.82, 517,999.78 and 203,280.05

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Solution

The fourth proportional to 375,361.82, 517,999.78 and 203,280.05 is: 280,526.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,361.82 : 517,999.78 = 203,280.05 : x
  2. Step 2: Convert to fraction form
    375,361.82/517,999.78 = 203,280.05/x
  3. Step 3: Cross multiply
    375,361.82x = 517,999.78 × 203,280.05
  4. Step 4: Simplify right side
    375,361.82x = 105,299,022,727.49
  5. Step 5: Solve for x
    x = 105,299,022,727.49/375,361.82
  6. Step 6: Final answer
    x = 280,526.73

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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.