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Finding the Fourth Proportional to 481,227.76, 663,941.64 and 279,984.88

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Solution

The fourth proportional to 481,227.76, 663,941.64 and 279,984.88 is: 386,290.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,227.76 : 663,941.64 = 279,984.88 : x
  2. Step 2: Convert to fraction form
    481,227.76/663,941.64 = 279,984.88/x
  3. Step 3: Cross multiply
    481,227.76x = 663,941.64 × 279,984.88
  4. Step 4: Simplify right side
    481,227.76x = 185,893,620,402.40
  5. Step 5: Solve for x
    x = 185,893,620,402.40/481,227.76
  6. Step 6: Final answer
    x = 386,290.31

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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.