Home / 395,137,530.25-545,289,791.75-221,297,274.25

Finding the Fourth Proportional to 395,137,530.25, 545,289,791.75 and 221,297,274.25

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Solution

The fourth proportional to 395,137,530.25, 545,289,791.75 and 221,297,274.25 is: 305,390,238.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,137,530.25 : 545,289,791.75 = 221,297,274.25 : x
  2. Step 2: Convert to fraction form
    395,137,530.25/545,289,791.75 = 221,297,274.25/x
  3. Step 3: Cross multiply
    395,137,530.25x = 545,289,791.75 × 221,297,274.25
  4. Step 4: Simplify right side
    395,137,530.25x = 120,671,144,589,518,656
  5. Step 5: Solve for x
    x = 120,671,144,589,518,656/395,137,530.25
  6. Step 6: Final answer
    x = 305,390,238.47

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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.