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Finding the Fourth Proportional to 253,658.87, 380,546.62 and 76,169.24

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Solution

The fourth proportional to 253,658.87, 380,546.62 and 76,169.24 is: 114,271.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,658.87 : 380,546.62 = 76,169.24 : x
  2. Step 2: Convert to fraction form
    253,658.87/380,546.62 = 76,169.24/x
  3. Step 3: Cross multiply
    253,658.87x = 380,546.62 × 76,169.24
  4. Step 4: Simplify right side
    253,658.87x = 28,985,946,829.97
  5. Step 5: Solve for x
    x = 28,985,946,829.97/253,658.87
  6. Step 6: Final answer
    x = 114,271.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.