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Finding the Third Proportional to 108,857,390 and 168,551,288

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Solution

The third proportional to 108,857,390 and 168,551,288 is: 260,979,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,857,390 : 168,551,288 = 168,551,288 : x
  2. Step 2: Convert to fraction form
    108,857,390/168,551,288 = 168,551,288/x
  3. Step 3: Cross multiply
    108,857,390x = 168,551,288 × 168,551,288
  4. Step 4: Simplify right side
    108,857,390x = 28,409,536,686,458,944
  5. Step 5: Solve for x
    x = 28,409,536,686,458,944/108,857,390
  6. Step 6: Final answer
    x = 260,979,403.30

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.