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Finding the Fourth Proportional to 878,198.48, 1,317,375.48 and 247,117.76

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Solution

The fourth proportional to 878,198.48, 1,317,375.48 and 247,117.76 is: 370,698.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,198.48 : 1,317,375.48 = 247,117.76 : x
  2. Step 2: Convert to fraction form
    878,198.48/1,317,375.48 = 247,117.76/x
  3. Step 3: Cross multiply
    878,198.48x = 1,317,375.48 × 247,117.76
  4. Step 4: Simplify right side
    878,198.48x = 325,546,877,696.53
  5. Step 5: Solve for x
    x = 325,546,877,696.53/878,198.48
  6. Step 6: Final answer
    x = 370,698.52

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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.