Home / 318,489,020.91-439,288,450.16-212,589,043.02

Finding the Fourth Proportional to 318,489,020.91, 439,288,450.16 and 212,589,043.02

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Solution

The fourth proportional to 318,489,020.91, 439,288,450.16 and 212,589,043.02 is: 293,221,759.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,489,020.91 : 439,288,450.16 = 212,589,043.02 : x
  2. Step 2: Convert to fraction form
    318,489,020.91/439,288,450.16 = 212,589,043.02/x
  3. Step 3: Cross multiply
    318,489,020.91x = 439,288,450.16 × 212,589,043.02
  4. Step 4: Simplify right side
    318,489,020.91x = 93,387,911,228,190,416
  5. Step 5: Solve for x
    x = 93,387,911,228,190,416/318,489,020.91
  6. Step 6: Final answer
    x = 293,221,759.93

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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.