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Finding the Third Proportional to 155,280 and 235,800

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Solution

The third proportional to 155,280 and 235,800 is: 358,073.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,280 : 235,800 = 235,800 : x
  2. Step 2: Convert to fraction form
    155,280/235,800 = 235,800/x
  3. Step 3: Cross multiply
    155,280x = 235,800 × 235,800
  4. Step 4: Simplify right side
    155,280x = 55,601,640,000
  5. Step 5: Solve for x
    x = 55,601,640,000/155,280
  6. Step 6: Final answer
    x = 358,073.42

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.