Home / 278,431.62-384,236.91-151,107.36

Finding the Fourth Proportional to 278,431.62, 384,236.91 and 151,107.36

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Solution

The fourth proportional to 278,431.62, 384,236.91 and 151,107.36 is: 208,528.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,431.62 : 384,236.91 = 151,107.36 : x
  2. Step 2: Convert to fraction form
    278,431.62/384,236.91 = 151,107.36/x
  3. Step 3: Cross multiply
    278,431.62x = 384,236.91 × 151,107.36
  4. Step 4: Simplify right side
    278,431.62x = 58,061,025,084.66
  5. Step 5: Solve for x
    x = 58,061,025,084.66/278,431.62
  6. Step 6: Final answer
    x = 208,528.85

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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.