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Finding the Fourth Proportional to 646,338.49, 969,574.05 and 247,314.87

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Solution

The fourth proportional to 646,338.49, 969,574.05 and 247,314.87 is: 370,997.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,338.49 : 969,574.05 = 247,314.87 : x
  2. Step 2: Convert to fraction form
    646,338.49/969,574.05 = 247,314.87/x
  3. Step 3: Cross multiply
    646,338.49x = 969,574.05 × 247,314.87
  4. Step 4: Simplify right side
    646,338.49x = 239,790,080,131.12
  5. Step 5: Solve for x
    x = 239,790,080,131.12/646,338.49
  6. Step 6: Final answer
    x = 370,997.68

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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.