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Finding the Fourth Proportional to 200,339.60, 300,072.72 and 100,325.36

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Solution

The fourth proportional to 200,339.60, 300,072.72 and 100,325.36 is: 150,269.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,339.60 : 300,072.72 = 100,325.36 : x
  2. Step 2: Convert to fraction form
    200,339.60/300,072.72 = 100,325.36/x
  3. Step 3: Cross multiply
    200,339.60x = 300,072.72 × 100,325.36
  4. Step 4: Simplify right side
    200,339.60x = 30,104,903,660.18
  5. Step 5: Solve for x
    x = 30,104,903,660.18/200,339.60
  6. Step 6: Final answer
    x = 150,269.36

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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.