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Finding the Fourth Proportional to 247,201.29, 370,814.90 and 78,735.87

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Solution

The fourth proportional to 247,201.29, 370,814.90 and 78,735.87 is: 118,107.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,201.29 : 370,814.90 = 78,735.87 : x
  2. Step 2: Convert to fraction form
    247,201.29/370,814.90 = 78,735.87/x
  3. Step 3: Cross multiply
    247,201.29x = 370,814.90 × 78,735.87
  4. Step 4: Simplify right side
    247,201.29x = 29,196,433,366.78
  5. Step 5: Solve for x
    x = 29,196,433,366.78/247,201.29
  6. Step 6: Final answer
    x = 118,107.93

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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.