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Finding the Fourth Proportional to 484,418.40, 726,109.20 and 218,133.60

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Solution

The fourth proportional to 484,418.40, 726,109.20 and 218,133.60 is: 326,966.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,418.40 : 726,109.20 = 218,133.60 : x
  2. Step 2: Convert to fraction form
    484,418.40/726,109.20 = 218,133.60/x
  3. Step 3: Cross multiply
    484,418.40x = 726,109.20 × 218,133.60
  4. Step 4: Simplify right side
    484,418.40x = 158,388,813,789.12
  5. Step 5: Solve for x
    x = 158,388,813,789.12/484,418.40
  6. Step 6: Final answer
    x = 326,966.96

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1.5x scale

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.