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Finding the Third Proportional to 178,409.50 and 260,916.50

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Solution

The third proportional to 178,409.50 and 260,916.50 is: 381,579.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,409.50 : 260,916.50 = 260,916.50 : x
  2. Step 2: Convert to fraction form
    178,409.50/260,916.50 = 260,916.50/x
  3. Step 3: Cross multiply
    178,409.50x = 260,916.50 × 260,916.50
  4. Step 4: Simplify right side
    178,409.50x = 68,077,419,972.25
  5. Step 5: Solve for x
    x = 68,077,419,972.25/178,409.50
  6. Step 6: Final answer
    x = 381,579.57

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.