Home / 285,310.60-393,725.78-154,487.62

Finding the Fourth Proportional to 285,310.60, 393,725.78 and 154,487.62

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Solution

The fourth proportional to 285,310.60, 393,725.78 and 154,487.62 is: 213,191.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,310.60 : 393,725.78 = 154,487.62 : x
  2. Step 2: Convert to fraction form
    285,310.60/393,725.78 = 154,487.62/x
  3. Step 3: Cross multiply
    285,310.60x = 393,725.78 × 154,487.62
  4. Step 4: Simplify right side
    285,310.60x = 60,825,758,086.75
  5. Step 5: Solve for x
    x = 60,825,758,086.75/285,310.60
  6. Step 6: Final answer
    x = 213,191.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.