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Finding the Fourth Proportional to 389,800.08, 584,755.50 and 119,950.56

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Solution

The fourth proportional to 389,800.08, 584,755.50 and 119,950.56 is: 179,942.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,800.08 : 584,755.50 = 119,950.56 : x
  2. Step 2: Convert to fraction form
    389,800.08/584,755.50 = 119,950.56/x
  3. Step 3: Cross multiply
    389,800.08x = 584,755.50 × 119,950.56
  4. Step 4: Simplify right side
    389,800.08x = 70,141,749,688.08
  5. Step 5: Solve for x
    x = 70,141,749,688.08/389,800.08
  6. Step 6: Final answer
    x = 179,942.88

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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.