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Finding the Fourth Proportional to 247,790.62, 341,923.64 and 137,406.50

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Solution

The fourth proportional to 247,790.62, 341,923.64 and 137,406.50 is: 189,605.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,790.62 : 341,923.64 = 137,406.50 : x
  2. Step 2: Convert to fraction form
    247,790.62/341,923.64 = 137,406.50/x
  3. Step 3: Cross multiply
    247,790.62x = 341,923.64 × 137,406.50
  4. Step 4: Simplify right side
    247,790.62x = 46,982,530,639.66
  5. Step 5: Solve for x
    x = 46,982,530,639.66/247,790.62
  6. Step 6: Final answer
    x = 189,605.77

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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.