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Finding the Third Proportional to 100,827,829.50 and 216,978,466.50

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Solution

The third proportional to 100,827,829.50 and 216,978,466.50 is: 466,931,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,827,829.50 : 216,978,466.50 = 216,978,466.50 : x
  2. Step 2: Convert to fraction form
    100,827,829.50/216,978,466.50 = 216,978,466.50/x
  3. Step 3: Cross multiply
    100,827,829.50x = 216,978,466.50 × 216,978,466.50
  4. Step 4: Simplify right side
    100,827,829.50x = 47,079,654,924,691,624
  5. Step 5: Solve for x
    x = 47,079,654,924,691,624/100,827,829.50
  6. Step 6: Final answer
    x = 466,931,155.40

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.