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Finding the Fourth Proportional to 203,291.50, 280,542.27 and 123,803.50

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Solution

The fourth proportional to 203,291.50, 280,542.27 and 123,803.50 is: 170,848.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,291.50 : 280,542.27 = 123,803.50 : x
  2. Step 2: Convert to fraction form
    203,291.50/280,542.27 = 123,803.50/x
  3. Step 3: Cross multiply
    203,291.50x = 280,542.27 × 123,803.50
  4. Step 4: Simplify right side
    203,291.50x = 34,732,114,923.95
  5. Step 5: Solve for x
    x = 34,732,114,923.95/203,291.50
  6. Step 6: Final answer
    x = 170,848.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.