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Finding the Fourth Proportional to 520,169.52, 780,174.60 and 165,137.52

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Solution

The fourth proportional to 520,169.52, 780,174.60 and 165,137.52 is: 247,680.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,169.52 : 780,174.60 = 165,137.52 : x
  2. Step 2: Convert to fraction form
    520,169.52/780,174.60 = 165,137.52/x
  3. Step 3: Cross multiply
    520,169.52x = 780,174.60 × 165,137.52
  4. Step 4: Simplify right side
    520,169.52x = 128,836,098,610.99
  5. Step 5: Solve for x
    x = 128,836,098,610.99/520,169.52
  6. Step 6: Final answer
    x = 247,680.98

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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.