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Finding the Fourth Proportional to 218,079,134.80, 326,840,839.80 and 115,892,126.80

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Solution

The fourth proportional to 218,079,134.80, 326,840,839.80 and 115,892,126.80 is: 173,690,527.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,079,134.80 : 326,840,839.80 = 115,892,126.80 : x
  2. Step 2: Convert to fraction form
    218,079,134.80/326,840,839.80 = 115,892,126.80/x
  3. Step 3: Cross multiply
    218,079,134.80x = 326,840,839.80 × 115,892,126.80
  4. Step 4: Simplify right side
    218,079,134.80x = 37,878,280,049,520,088
  5. Step 5: Solve for x
    x = 37,878,280,049,520,088/218,079,134.80
  6. Step 6: Final answer
    x = 173,690,527.91

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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.