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Finding the Fourth Proportional to 247,039.30, 340,916.92 and 145,065.96

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Solution

The fourth proportional to 247,039.30, 340,916.92 and 145,065.96 is: 200,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,039.30 : 340,916.92 = 145,065.96 : x
  2. Step 2: Convert to fraction form
    247,039.30/340,916.92 = 145,065.96/x
  3. Step 3: Cross multiply
    247,039.30x = 340,916.92 × 145,065.96
  4. Step 4: Simplify right side
    247,039.30x = 49,455,440,280.04
  5. Step 5: Solve for x
    x = 49,455,440,280.04/247,039.30
  6. Step 6: Final answer
    x = 200,192.60

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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.