Home / 395,137,494-545,289,741.72-221,297,238

Finding the Fourth Proportional to 395,137,494, 545,289,741.72 and 221,297,238

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Solution

The fourth proportional to 395,137,494, 545,289,741.72 and 221,297,238 is: 305,390,188.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,137,494 : 545,289,741.72 = 221,297,238 : x
  2. Step 2: Convert to fraction form
    395,137,494/545,289,741.72 = 221,297,238/x
  3. Step 3: Cross multiply
    395,137,494x = 545,289,741.72 × 221,297,238
  4. Step 4: Simplify right side
    395,137,494x = 120,671,113,752,369,376
  5. Step 5: Solve for x
    x = 120,671,113,752,369,376/395,137,494
  6. Step 6: Final answer
    x = 305,390,188.44

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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.