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Finding the Fourth Proportional to 252,390.90, 378,792.90 and 250,422.60

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Solution

The fourth proportional to 252,390.90, 378,792.90 and 250,422.60 is: 375,838.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,390.90 : 378,792.90 = 250,422.60 : x
  2. Step 2: Convert to fraction form
    252,390.90/378,792.90 = 250,422.60/x
  3. Step 3: Cross multiply
    252,390.90x = 378,792.90 × 250,422.60
  4. Step 4: Simplify right side
    252,390.90x = 94,858,302,879.54
  5. Step 5: Solve for x
    x = 94,858,302,879.54/252,390.90
  6. Step 6: Final answer
    x = 375,838.84

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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.