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Finding the Fourth Proportional to 334,940.05, 501,825.05 and 279,138.75

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Solution

The fourth proportional to 334,940.05, 501,825.05 and 279,138.75 is: 418,220.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,940.05 : 501,825.05 = 279,138.75 : x
  2. Step 2: Convert to fraction form
    334,940.05/501,825.05 = 279,138.75/x
  3. Step 3: Cross multiply
    334,940.05x = 501,825.05 × 279,138.75
  4. Step 4: Simplify right side
    334,940.05x = 140,078,817,175.69
  5. Step 5: Solve for x
    x = 140,078,817,175.69/334,940.05
  6. Step 6: Final answer
    x = 418,220.57

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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.