Home / 395,137,645.56-545,289,950.82-221,297,389.56

Finding the Fourth Proportional to 395,137,645.56, 545,289,950.82 and 221,297,389.56

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Solution

The fourth proportional to 395,137,645.56, 545,289,950.82 and 221,297,389.56 is: 305,390,397.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,137,645.56 : 545,289,950.82 = 221,297,389.56 : x
  2. Step 2: Convert to fraction form
    395,137,645.56/545,289,950.82 = 221,297,389.56/x
  3. Step 3: Cross multiply
    395,137,645.56x = 545,289,950.82 × 221,297,389.56
  4. Step 4: Simplify right side
    395,137,645.56x = 120,671,242,669,766,800
  5. Step 5: Solve for x
    x = 120,671,242,669,766,800/395,137,645.56
  6. Step 6: Final answer
    x = 305,390,397.56

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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.