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Finding the Third Proportional to 129,566,772 and 198,680,700

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Solution

The third proportional to 129,566,772 and 198,680,700 is: 304,661,603.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,566,772 : 198,680,700 = 198,680,700 : x
  2. Step 2: Convert to fraction form
    129,566,772/198,680,700 = 198,680,700/x
  3. Step 3: Cross multiply
    129,566,772x = 198,680,700 × 198,680,700
  4. Step 4: Simplify right side
    129,566,772x = 39,474,020,552,490,000
  5. Step 5: Solve for x
    x = 39,474,020,552,490,000/129,566,772
  6. Step 6: Final answer
    x = 304,661,603.77

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.