Home / 221,039,337.70-305,028,940.75-121,917,955.74

Finding the Fourth Proportional to 221,039,337.70, 305,028,940.75 and 121,917,955.74

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Solution

The fourth proportional to 221,039,337.70, 305,028,940.75 and 121,917,955.74 is: 168,243,830.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,039,337.70 : 305,028,940.75 = 121,917,955.74 : x
  2. Step 2: Convert to fraction form
    221,039,337.70/305,028,940.75 = 121,917,955.74/x
  3. Step 3: Cross multiply
    221,039,337.70x = 305,028,940.75 × 121,917,955.74
  4. Step 4: Simplify right side
    221,039,337.70x = 37,188,504,897,777,584
  5. Step 5: Solve for x
    x = 37,188,504,897,777,584/221,039,337.70
  6. Step 6: Final answer
    x = 168,243,830.64

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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.