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Finding the Fourth Proportional to 531,791.28, 733,874.22 and 290,079.05

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Solution

The fourth proportional to 531,791.28, 733,874.22 and 290,079.05 is: 400,310.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,791.28 : 733,874.22 = 290,079.05 : x
  2. Step 2: Convert to fraction form
    531,791.28/733,874.22 = 290,079.05/x
  3. Step 3: Cross multiply
    531,791.28x = 733,874.22 × 290,079.05
  4. Step 4: Simplify right side
    531,791.28x = 212,881,532,887.72
  5. Step 5: Solve for x
    x = 212,881,532,887.72/531,791.28
  6. Step 6: Final answer
    x = 400,310.31

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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.