Home / 221,308,601.59-331,964,166.41-91,916,211.78

Finding the Fourth Proportional to 221,308,601.59, 331,964,166.41 and 91,916,211.78

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Solution

The fourth proportional to 221,308,601.59, 331,964,166.41 and 91,916,211.78 is: 137,874,842.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,308,601.59 : 331,964,166.41 = 91,916,211.78 : x
  2. Step 2: Convert to fraction form
    221,308,601.59/331,964,166.41 = 91,916,211.78/x
  3. Step 3: Cross multiply
    221,308,601.59x = 331,964,166.41 × 91,916,211.78
  4. Step 4: Simplify right side
    221,308,601.59x = 30,512,888,622,997,828
  5. Step 5: Solve for x
    x = 30,512,888,622,997,828/221,308,601.59
  6. Step 6: Final answer
    x = 137,874,842.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.