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Finding the Fourth Proportional to 485,761.54, 670,351.56 and 267,965.30

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Solution

The fourth proportional to 485,761.54, 670,351.56 and 267,965.30 is: 369,792.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,761.54 : 670,351.56 = 267,965.30 : x
  2. Step 2: Convert to fraction form
    485,761.54/670,351.56 = 267,965.30/x
  3. Step 3: Cross multiply
    485,761.54x = 670,351.56 × 267,965.30
  4. Step 4: Simplify right side
    485,761.54x = 179,630,956,880.87
  5. Step 5: Solve for x
    x = 179,630,956,880.87/485,761.54
  6. Step 6: Final answer
    x = 369,792.46

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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.