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Finding the Fourth Proportional to 484,231.20, 726,128.10 and 217,854.60

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Solution

The fourth proportional to 484,231.20, 726,128.10 and 217,854.60 is: 326,683.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,231.20 : 726,128.10 = 217,854.60 : x
  2. Step 2: Convert to fraction form
    484,231.20/726,128.10 = 217,854.60/x
  3. Step 3: Cross multiply
    484,231.20x = 726,128.10 × 217,854.60
  4. Step 4: Simplify right side
    484,231.20x = 158,190,346,774.26
  5. Step 5: Solve for x
    x = 158,190,346,774.26/484,231.20
  6. Step 6: Final answer
    x = 326,683.51

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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.