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Finding the Third Proportional to 155,305,278 and 247,240,972.50

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Solution

The third proportional to 155,305,278 and 247,240,972.50 is: 393,599,620.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,305,278 : 247,240,972.50 = 247,240,972.50 : x
  2. Step 2: Convert to fraction form
    155,305,278/247,240,972.50 = 247,240,972.50/x
  3. Step 3: Cross multiply
    155,305,278x = 247,240,972.50 × 247,240,972.50
  4. Step 4: Simplify right side
    155,305,278x = 61,128,098,482,745,760
  5. Step 5: Solve for x
    x = 61,128,098,482,745,760/155,305,278
  6. Step 6: Final answer
    x = 393,599,620.50

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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.