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Finding the Fourth Proportional to 252,382.40, 378,573.60 and 189,396.80

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Solution

The fourth proportional to 252,382.40, 378,573.60 and 189,396.80 is: 284,095.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,382.40 : 378,573.60 = 189,396.80 : x
  2. Step 2: Convert to fraction form
    252,382.40/378,573.60 = 189,396.80/x
  3. Step 3: Cross multiply
    252,382.40x = 378,573.60 × 189,396.80
  4. Step 4: Simplify right side
    252,382.40x = 71,700,628,404.48
  5. Step 5: Solve for x
    x = 71,700,628,404.48/252,382.40
  6. Step 6: Final answer
    x = 284,095.20

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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.