Home / 311,393,690.65-429,715,728.34-172,160,872.57

Finding the Fourth Proportional to 311,393,690.65, 429,715,728.34 and 172,160,872.57

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Solution

The fourth proportional to 311,393,690.65, 429,715,728.34 and 172,160,872.57 is: 237,577,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,393,690.65 : 429,715,728.34 = 172,160,872.57 : x
  2. Step 2: Convert to fraction form
    311,393,690.65/429,715,728.34 = 172,160,872.57/x
  3. Step 3: Cross multiply
    311,393,690.65x = 429,715,728.34 × 172,160,872.57
  4. Step 4: Simplify right side
    311,393,690.65x = 73,980,234,748,067,472
  5. Step 5: Solve for x
    x = 73,980,234,748,067,472/311,393,690.65
  6. Step 6: Final answer
    x = 237,577,821.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.