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Finding the Fourth Proportional to 484,419.40, 726,110.70 and 218,134.60

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Solution

The fourth proportional to 484,419.40, 726,110.70 and 218,134.60 is: 326,968.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,419.40 : 726,110.70 = 218,134.60 : x
  2. Step 2: Convert to fraction form
    484,419.40/726,110.70 = 218,134.60/x
  3. Step 3: Cross multiply
    484,419.40x = 726,110.70 × 218,134.60
  4. Step 4: Simplify right side
    484,419.40x = 158,389,867,100.22
  5. Step 5: Solve for x
    x = 158,389,867,100.22/484,419.40
  6. Step 6: Final answer
    x = 326,968.46

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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.