Home / 221,470,902.81-332,161,259.90-81,363,205.21

Finding the Fourth Proportional to 221,470,902.81, 332,161,259.90 and 81,363,205.21

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Solution

The fourth proportional to 221,470,902.81, 332,161,259.90 and 81,363,205.21 is: 122,028,241.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,470,902.81 : 332,161,259.90 = 81,363,205.21 : x
  2. Step 2: Convert to fraction form
    221,470,902.81/332,161,259.90 = 81,363,205.21/x
  3. Step 3: Cross multiply
    221,470,902.81x = 332,161,259.90 × 81,363,205.21
  4. Step 4: Simplify right side
    221,470,902.81x = 27,025,704,752,055,840
  5. Step 5: Solve for x
    x = 27,025,704,752,055,840/221,470,902.81
  6. Step 6: Final answer
    x = 122,028,241.23

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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.