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Finding the Fourth Proportional to 485,370.40, 728,383.64 and 169,830.04

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Solution

The fourth proportional to 485,370.40, 728,383.64 and 169,830.04 is: 254,859.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,370.40 : 728,383.64 = 169,830.04 : x
  2. Step 2: Convert to fraction form
    485,370.40/728,383.64 = 169,830.04/x
  3. Step 3: Cross multiply
    485,370.40x = 728,383.64 × 169,830.04
  4. Step 4: Simplify right side
    485,370.40x = 123,701,422,716.55
  5. Step 5: Solve for x
    x = 123,701,422,716.55/485,370.40
  6. Step 6: Final answer
    x = 254,859.84

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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.