Home / 221,276,759.40-331,915,139.10-206,160,215.40

Finding the Fourth Proportional to 221,276,759.40, 331,915,139.10 and 206,160,215.40

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Solution

The fourth proportional to 221,276,759.40, 331,915,139.10 and 206,160,215.40 is: 309,240,323.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,276,759.40 : 331,915,139.10 = 206,160,215.40 : x
  2. Step 2: Convert to fraction form
    221,276,759.40/331,915,139.10 = 206,160,215.40/x
  3. Step 3: Cross multiply
    221,276,759.40x = 331,915,139.10 × 206,160,215.40
  4. Step 4: Simplify right side
    221,276,759.40x = 68,427,696,571,376,968
  5. Step 5: Solve for x
    x = 68,427,696,571,376,968/221,276,759.40
  6. Step 6: Final answer
    x = 309,240,323.10

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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.