Home / 221,145,220.25-305,290,888.94-137,540,299.94

Finding the Fourth Proportional to 221,145,220.25, 305,290,888.94 and 137,540,299.94

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Solution

The fourth proportional to 221,145,220.25, 305,290,888.94 and 137,540,299.94 is: 189,874,329.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,145,220.25 : 305,290,888.94 = 137,540,299.94 : x
  2. Step 2: Convert to fraction form
    221,145,220.25/305,290,888.94 = 137,540,299.94/x
  3. Step 3: Cross multiply
    221,145,220.25x = 305,290,888.94 × 137,540,299.94
  4. Step 4: Simplify right side
    221,145,220.25x = 41,989,800,432,574,224
  5. Step 5: Solve for x
    x = 41,989,800,432,574,224/221,145,220.25
  6. Step 6: Final answer
    x = 189,874,329.57

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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.