Home / 278,325.76-384,086.10-151,000.42

Finding the Fourth Proportional to 278,325.76, 384,086.10 and 151,000.42

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Solution

The fourth proportional to 278,325.76, 384,086.10 and 151,000.42 is: 208,378.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,325.76 : 384,086.10 = 151,000.42 : x
  2. Step 2: Convert to fraction form
    278,325.76/384,086.10 = 151,000.42/x
  3. Step 3: Cross multiply
    278,325.76x = 384,086.10 × 151,000.42
  4. Step 4: Simplify right side
    278,325.76x = 57,997,162,416.16
  5. Step 5: Solve for x
    x = 57,997,162,416.16/278,325.76
  6. Step 6: Final answer
    x = 208,378.71

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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.