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Finding the Third Proportional to 155,427.38 and 247,153.50

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Solution

The third proportional to 155,427.38 and 247,153.50 is: 393,012.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,427.38 : 247,153.50 = 247,153.50 : x
  2. Step 2: Convert to fraction form
    155,427.38/247,153.50 = 247,153.50/x
  3. Step 3: Cross multiply
    155,427.38x = 247,153.50 × 247,153.50
  4. Step 4: Simplify right side
    155,427.38x = 61,084,852,562.25
  5. Step 5: Solve for x
    x = 61,084,852,562.25/155,427.38
  6. Step 6: Final answer
    x = 393,012.19

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.