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Finding the Fourth Proportional to 638,843.50, 958,427.25 and 239,485.42

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Solution

The fourth proportional to 638,843.50, 958,427.25 and 239,485.42 is: 359,288.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,843.50 : 958,427.25 = 239,485.42 : x
  2. Step 2: Convert to fraction form
    638,843.50/958,427.25 = 239,485.42/x
  3. Step 3: Cross multiply
    638,843.50x = 958,427.25 × 239,485.42
  4. Step 4: Simplify right side
    638,843.50x = 229,529,352,505.70
  5. Step 5: Solve for x
    x = 229,529,352,505.70/638,843.50
  6. Step 6: Final answer
    x = 359,288.86

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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.