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Finding the Fourth Proportional to 520,093.80, 780,183.90 and 165,097.80

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Solution

The fourth proportional to 520,093.80, 780,183.90 and 165,097.80 is: 247,660.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,093.80 : 780,183.90 = 165,097.80 : x
  2. Step 2: Convert to fraction form
    520,093.80/780,183.90 = 165,097.80/x
  3. Step 3: Cross multiply
    520,093.80x = 780,183.90 × 165,097.80
  4. Step 4: Simplify right side
    520,093.80x = 128,806,645,485.42
  5. Step 5: Solve for x
    x = 128,806,645,485.42/520,093.80
  6. Step 6: Final answer
    x = 247,660.41

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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.