Home / 395,137,569-545,289,845.22-221,297,313

Finding the Fourth Proportional to 395,137,569, 545,289,845.22 and 221,297,313

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Solution

The fourth proportional to 395,137,569, 545,289,845.22 and 221,297,313 is: 305,390,291.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,137,569 : 545,289,845.22 = 221,297,313 : x
  2. Step 2: Convert to fraction form
    395,137,569/545,289,845.22 = 221,297,313/x
  3. Step 3: Cross multiply
    395,137,569x = 545,289,845.22 × 221,297,313
  4. Step 4: Simplify right side
    395,137,569x = 120,671,177,553,371,904
  5. Step 5: Solve for x
    x = 120,671,177,553,371,904/395,137,569
  6. Step 6: Final answer
    x = 305,390,291.94

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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.