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Finding the Fourth Proportional to 638,380.48, 957,276.32 and 188,940.64

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Solution

The fourth proportional to 638,380.48, 957,276.32 and 188,940.64 is: 283,323.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,380.48 : 957,276.32 = 188,940.64 : x
  2. Step 2: Convert to fraction form
    638,380.48/957,276.32 = 188,940.64/x
  3. Step 3: Cross multiply
    638,380.48x = 957,276.32 × 188,940.64
  4. Step 4: Simplify right side
    638,380.48x = 180,868,400,557.65
  5. Step 5: Solve for x
    x = 180,868,400,557.65/638,380.48
  6. Step 6: Final answer
    x = 283,323.83

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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.