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Finding the Fourth Proportional to 521,578.53, 782,489.84 and 161,730.45

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Solution

The fourth proportional to 521,578.53, 782,489.84 and 161,730.45 is: 242,633.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,578.53 : 782,489.84 = 161,730.45 : x
  2. Step 2: Convert to fraction form
    521,578.53/782,489.84 = 161,730.45/x
  3. Step 3: Cross multiply
    521,578.53x = 782,489.84 × 161,730.45
  4. Step 4: Simplify right side
    521,578.53x = 126,552,433,134.98
  5. Step 5: Solve for x
    x = 126,552,433,134.98/521,578.53
  6. Step 6: Final answer
    x = 242,633.52

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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.