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Finding the Fourth Proportional to 200,528.99, 300,782.41 and 67,395.50

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Solution

The fourth proportional to 200,528.99, 300,782.41 and 67,395.50 is: 101,089.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,528.99 : 300,782.41 = 67,395.50 : x
  2. Step 2: Convert to fraction form
    200,528.99/300,782.41 = 67,395.50/x
  3. Step 3: Cross multiply
    200,528.99x = 300,782.41 × 67,395.50
  4. Step 4: Simplify right side
    200,528.99x = 20,271,380,161.20
  5. Step 5: Solve for x
    x = 20,271,380,161.20/200,528.99
  6. Step 6: Final answer
    x = 101,089.53

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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.