Home / 395,137,596.75-545,289,883.52-221,297,340.75

Finding the Fourth Proportional to 395,137,596.75, 545,289,883.52 and 221,297,340.75

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Solution

The fourth proportional to 395,137,596.75, 545,289,883.52 and 221,297,340.75 is: 305,390,330.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,137,596.75 : 545,289,883.52 = 221,297,340.75 : x
  2. Step 2: Convert to fraction form
    395,137,596.75/545,289,883.52 = 221,297,340.75/x
  3. Step 3: Cross multiply
    395,137,596.75x = 545,289,883.52 × 221,297,340.75
  4. Step 4: Simplify right side
    395,137,596.75x = 120,671,201,160,853,248
  5. Step 5: Solve for x
    x = 120,671,201,160,853,248/395,137,596.75
  6. Step 6: Final answer
    x = 305,390,330.24

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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.