Home / 395,137,639.56-545,289,942.54-221,297,383.56

Finding the Fourth Proportional to 395,137,639.56, 545,289,942.54 and 221,297,383.56

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Solution

The fourth proportional to 395,137,639.56, 545,289,942.54 and 221,297,383.56 is: 305,390,389.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,137,639.56 : 545,289,942.54 = 221,297,383.56 : x
  2. Step 2: Convert to fraction form
    395,137,639.56/545,289,942.54 = 221,297,383.56/x
  3. Step 3: Cross multiply
    395,137,639.56x = 545,289,942.54 × 221,297,383.56
  4. Step 4: Simplify right side
    395,137,639.56x = 120,671,237,565,684,736
  5. Step 5: Solve for x
    x = 120,671,237,565,684,736/395,137,639.56
  6. Step 6: Final answer
    x = 305,390,389.28

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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.