Home / 278,911.10-384,900.30-151,586.70

Finding the Fourth Proportional to 278,911.10, 384,900.30 and 151,586.70

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Solution

The fourth proportional to 278,911.10, 384,900.30 and 151,586.70 is: 209,191.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,911.10 : 384,900.30 = 151,586.70 : x
  2. Step 2: Convert to fraction form
    278,911.10/384,900.30 = 151,586.70/x
  3. Step 3: Cross multiply
    278,911.10x = 384,900.30 × 151,586.70
  4. Step 4: Simplify right side
    278,911.10x = 58,345,766,306.01
  5. Step 5: Solve for x
    x = 58,345,766,306.01/278,911.10
  6. Step 6: Final answer
    x = 209,191.27

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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.