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Finding the Fourth Proportional to 485,634.34, 728,007.76 and 169,919.02

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Solution

The fourth proportional to 485,634.34, 728,007.76 and 169,919.02 is: 254,723.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,634.34 : 728,007.76 = 169,919.02 : x
  2. Step 2: Convert to fraction form
    485,634.34/728,007.76 = 169,919.02/x
  3. Step 3: Cross multiply
    485,634.34x = 728,007.76 × 169,919.02
  4. Step 4: Simplify right side
    485,634.34x = 123,702,365,131.60
  5. Step 5: Solve for x
    x = 123,702,365,131.60/485,634.34
  6. Step 6: Final answer
    x = 254,723.27

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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.