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Finding the Third Proportional to 129,932,562 and 288,915,995

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Solution

The third proportional to 129,932,562 and 288,915,995 is: 642,429,048.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,932,562 : 288,915,995 = 288,915,995 : x
  2. Step 2: Convert to fraction form
    129,932,562/288,915,995 = 288,915,995/x
  3. Step 3: Cross multiply
    129,932,562x = 288,915,995 × 288,915,995
  4. Step 4: Simplify right side
    129,932,562x = 83,472,452,166,840,032
  5. Step 5: Solve for x
    x = 83,472,452,166,840,032/129,932,562
  6. Step 6: Final answer
    x = 642,429,048.44

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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.