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Finding the Fourth Proportional to 479,759.10, 662,070.76 and 261,969.28

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Solution

The fourth proportional to 479,759.10, 662,070.76 and 261,969.28 is: 361,519.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,759.10 : 662,070.76 = 261,969.28 : x
  2. Step 2: Convert to fraction form
    479,759.10/662,070.76 = 261,969.28/x
  3. Step 3: Cross multiply
    479,759.10x = 662,070.76 × 261,969.28
  4. Step 4: Simplify right side
    479,759.10x = 173,442,202,467.15
  5. Step 5: Solve for x
    x = 173,442,202,467.15/479,759.10
  6. Step 6: Final answer
    x = 361,519.36

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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.