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Finding the Third Proportional to 99,645,922.50 and 217,423,987.50

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Solution

The third proportional to 99,645,922.50 and 217,423,987.50 is: 474,411,688.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,645,922.50 : 217,423,987.50 = 217,423,987.50 : x
  2. Step 2: Convert to fraction form
    99,645,922.50/217,423,987.50 = 217,423,987.50/x
  3. Step 3: Cross multiply
    99,645,922.50x = 217,423,987.50 × 217,423,987.50
  4. Step 4: Simplify right side
    99,645,922.50x = 47,273,190,340,400,160
  5. Step 5: Solve for x
    x = 47,273,190,340,400,160/99,645,922.50
  6. Step 6: Final answer
    x = 474,411,688.45

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.