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Finding the Third Proportional to 99,387,928.81 and 218,491,594.28

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Solution

The third proportional to 99,387,928.81 and 218,491,594.28 is: 480,325,702.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,387,928.81 : 218,491,594.28 = 218,491,594.28 : x
  2. Step 2: Convert to fraction form
    99,387,928.81/218,491,594.28 = 218,491,594.28/x
  3. Step 3: Cross multiply
    99,387,928.81x = 218,491,594.28 × 218,491,594.28
  4. Step 4: Simplify right side
    99,387,928.81x = 47,738,576,769,853,752
  5. Step 5: Solve for x
    x = 47,738,576,769,853,752/99,387,928.81
  6. Step 6: Final answer
    x = 480,325,702.94

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.