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Finding the Third Proportional to 129,298,502 and 287,294,860

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Solution

The third proportional to 129,298,502 and 287,294,860 is: 638,354,933.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,298,502 : 287,294,860 = 287,294,860 : x
  2. Step 2: Convert to fraction form
    129,298,502/287,294,860 = 287,294,860/x
  3. Step 3: Cross multiply
    129,298,502x = 287,294,860 × 287,294,860
  4. Step 4: Simplify right side
    129,298,502x = 82,538,336,582,419,600
  5. Step 5: Solve for x
    x = 82,538,336,582,419,600/129,298,502
  6. Step 6: Final answer
    x = 638,354,933.01

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.