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Finding the Fourth Proportional to 219,688.85, 303,163.67 and 124,189.85

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Solution

The fourth proportional to 219,688.85, 303,163.67 and 124,189.85 is: 171,378.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,688.85 : 303,163.67 = 124,189.85 : x
  2. Step 2: Convert to fraction form
    219,688.85/303,163.67 = 124,189.85/x
  3. Step 3: Cross multiply
    219,688.85x = 303,163.67 × 124,189.85
  4. Step 4: Simplify right side
    219,688.85x = 37,649,848,565.98
  5. Step 5: Solve for x
    x = 37,649,848,565.98/219,688.85
  6. Step 6: Final answer
    x = 171,378.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.