Home / 278,710.20-384,608.66-151,383.06

Finding the Fourth Proportional to 278,710.20, 384,608.66 and 151,383.06

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Solution

The fourth proportional to 278,710.20, 384,608.66 and 151,383.06 is: 208,902.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,710.20 : 384,608.66 = 151,383.06 : x
  2. Step 2: Convert to fraction form
    278,710.20/384,608.66 = 151,383.06/x
  3. Step 3: Cross multiply
    278,710.20x = 384,608.66 × 151,383.06
  4. Step 4: Simplify right side
    278,710.20x = 58,223,235,096.38
  5. Step 5: Solve for x
    x = 58,223,235,096.38/278,710.20
  6. Step 6: Final answer
    x = 208,902.42

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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.