Home / 312,948,045.64-431,913,213.30-187,505,195.56

Finding the Fourth Proportional to 312,948,045.64, 431,913,213.30 and 187,505,195.56

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Solution

The fourth proportional to 312,948,045.64, 431,913,213.30 and 187,505,195.56 is: 258,784,078.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,948,045.64 : 431,913,213.30 = 187,505,195.56 : x
  2. Step 2: Convert to fraction form
    312,948,045.64/431,913,213.30 = 187,505,195.56/x
  3. Step 3: Cross multiply
    312,948,045.64x = 431,913,213.30 × 187,505,195.56
  4. Step 4: Simplify right side
    312,948,045.64x = 80,985,971,524,764,496
  5. Step 5: Solve for x
    x = 80,985,971,524,764,496/312,948,045.64
  6. Step 6: Final answer
    x = 258,784,078.23

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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.