Home / 221,145,221.25-305,290,890.32-137,540,300.94

Finding the Fourth Proportional to 221,145,221.25, 305,290,890.32 and 137,540,300.94

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Solution

The fourth proportional to 221,145,221.25, 305,290,890.32 and 137,540,300.94 is: 189,874,330.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,145,221.25 : 305,290,890.32 = 137,540,300.94 : x
  2. Step 2: Convert to fraction form
    221,145,221.25/305,290,890.32 = 137,540,300.94/x
  3. Step 3: Cross multiply
    221,145,221.25x = 305,290,890.32 × 137,540,300.94
  4. Step 4: Simplify right side
    221,145,221.25x = 41,989,800,928,853,328
  5. Step 5: Solve for x
    x = 41,989,800,928,853,328/221,145,221.25
  6. Step 6: Final answer
    x = 189,874,330.96

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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.