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Finding the Fourth Proportional to 343,661,605.80, 515,774,418.30 and 340,974,220.20

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Solution

The fourth proportional to 343,661,605.80, 515,774,418.30 and 340,974,220.20 is: 511,741,134.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,661,605.80 : 515,774,418.30 = 340,974,220.20 : x
  2. Step 2: Convert to fraction form
    343,661,605.80/515,774,418.30 = 340,974,220.20/x
  3. Step 3: Cross multiply
    343,661,605.80x = 515,774,418.30 × 340,974,220.20
  4. Step 4: Simplify right side
    343,661,605.80x = 175,865,780,078,951,104
  5. Step 5: Solve for x
    x = 175,865,780,078,951,104/343,661,605.80
  6. Step 6: Final answer
    x = 511,741,134.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.