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Finding the Fourth Proportional to 203,437.52, 305,156.28 and 68,490.31

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Solution

The fourth proportional to 203,437.52, 305,156.28 and 68,490.31 is: 102,735.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,437.52 : 305,156.28 = 68,490.31 : x
  2. Step 2: Convert to fraction form
    203,437.52/305,156.28 = 68,490.31/x
  3. Step 3: Cross multiply
    203,437.52x = 305,156.28 × 68,490.31
  4. Step 4: Simplify right side
    203,437.52x = 20,900,247,896.50
  5. Step 5: Solve for x
    x = 20,900,247,896.50/203,437.52
  6. Step 6: Final answer
    x = 102,735.46

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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.