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Finding the Third Proportional to 221,270,790 and 319,670,558

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Solution

The third proportional to 221,270,790 and 319,670,558 is: 461,828,990.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,270,790 : 319,670,558 = 319,670,558 : x
  2. Step 2: Convert to fraction form
    221,270,790/319,670,558 = 319,670,558/x
  3. Step 3: Cross multiply
    221,270,790x = 319,670,558 × 319,670,558
  4. Step 4: Simplify right side
    221,270,790x = 102,189,265,652,031,360
  5. Step 5: Solve for x
    x = 102,189,265,652,031,360/221,270,790
  6. Step 6: Final answer
    x = 461,828,990.86

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.