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Finding the Fourth Proportional to 485,429.09, 728,467.56 and 169,886.03

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Solution

The fourth proportional to 485,429.09, 728,467.56 and 169,886.03 is: 254,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,429.09 : 728,467.56 = 169,886.03 : x
  2. Step 2: Convert to fraction form
    485,429.09/728,467.56 = 169,886.03/x
  3. Step 3: Cross multiply
    485,429.09x = 728,467.56 × 169,886.03
  4. Step 4: Simplify right side
    485,429.09x = 123,756,458,109.85
  5. Step 5: Solve for x
    x = 123,756,458,109.85/485,429.09
  6. Step 6: Final answer
    x = 254,942.40

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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.