Home / 386,243,849.64-533,000,286.18-218,991,361.80

Finding the Fourth Proportional to 386,243,849.64, 533,000,286.18 and 218,991,361.80

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Solution

The fourth proportional to 386,243,849.64, 533,000,286.18 and 218,991,361.80 is: 302,198,879.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,243,849.64 : 533,000,286.18 = 218,991,361.80 : x
  2. Step 2: Convert to fraction form
    386,243,849.64/533,000,286.18 = 218,991,361.80/x
  3. Step 3: Cross multiply
    386,243,849.64x = 533,000,286.18 × 218,991,361.80
  4. Step 4: Simplify right side
    386,243,849.64x = 116,722,458,510,347,920
  5. Step 5: Solve for x
    x = 116,722,458,510,347,920/386,243,849.64
  6. Step 6: Final answer
    x = 302,198,879.33

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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.