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Finding the Fourth Proportional to 200,608.45, 300,940.78 and 65,683.07

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Solution

The fourth proportional to 200,608.45, 300,940.78 and 65,683.07 is: 98,533.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,608.45 : 300,940.78 = 65,683.07 : x
  2. Step 2: Convert to fraction form
    200,608.45/300,940.78 = 65,683.07/x
  3. Step 3: Cross multiply
    200,608.45x = 300,940.78 × 65,683.07
  4. Step 4: Simplify right side
    200,608.45x = 19,766,714,318.59
  5. Step 5: Solve for x
    x = 19,766,714,318.59/200,608.45
  6. Step 6: Final answer
    x = 98,533.81

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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.