Home / 221,001,428.70-331,502,143.05-75,439,738.80

Finding the Fourth Proportional to 221,001,428.70, 331,502,143.05 and 75,439,738.80

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Solution

The fourth proportional to 221,001,428.70, 331,502,143.05 and 75,439,738.80 is: 113,159,608.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,001,428.70 : 331,502,143.05 = 75,439,738.80 : x
  2. Step 2: Convert to fraction form
    221,001,428.70/331,502,143.05 = 75,439,738.80/x
  3. Step 3: Cross multiply
    221,001,428.70x = 331,502,143.05 × 75,439,738.80
  4. Step 4: Simplify right side
    221,001,428.70x = 25,008,435,083,332,236
  5. Step 5: Solve for x
    x = 25,008,435,083,332,236/221,001,428.70
  6. Step 6: Final answer
    x = 113,159,608.20

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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.