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Finding the Fourth Proportional to 484,172.35, 726,258.59 and 129,187.69

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Solution

The fourth proportional to 484,172.35, 726,258.59 and 129,187.69 is: 193,781.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,172.35 : 726,258.59 = 129,187.69 : x
  2. Step 2: Convert to fraction form
    484,172.35/726,258.59 = 129,187.69/x
  3. Step 3: Cross multiply
    484,172.35x = 726,258.59 × 129,187.69
  4. Step 4: Simplify right side
    484,172.35x = 93,823,669,584.76
  5. Step 5: Solve for x
    x = 93,823,669,584.76/484,172.35
  6. Step 6: Final answer
    x = 193,781.55

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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.