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Finding the Fourth Proportional to 200,243.54, 300,410.30 and 67,120.39

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Solution

The fourth proportional to 200,243.54, 300,410.30 and 67,120.39 is: 100,695.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,243.54 : 300,410.30 = 67,120.39 : x
  2. Step 2: Convert to fraction form
    200,243.54/300,410.30 = 67,120.39/x
  3. Step 3: Cross multiply
    200,243.54x = 300,410.30 × 67,120.39
  4. Step 4: Simplify right side
    200,243.54x = 20,163,655,409.39
  5. Step 5: Solve for x
    x = 20,163,655,409.39/200,243.54
  6. Step 6: Final answer
    x = 100,695.66

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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.