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Finding the Fourth Proportional to 200,324.53, 300,485.88 and 81,995.88

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Solution

The fourth proportional to 200,324.53, 300,485.88 and 81,995.88 is: 122,993.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,324.53 : 300,485.88 = 81,995.88 : x
  2. Step 2: Convert to fraction form
    200,324.53/300,485.88 = 81,995.88/x
  3. Step 3: Cross multiply
    200,324.53x = 300,485.88 × 81,995.88
  4. Step 4: Simplify right side
    200,324.53x = 24,638,604,158.17
  5. Step 5: Solve for x
    x = 24,638,604,158.17/200,324.53
  6. Step 6: Final answer
    x = 122,993.45

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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.