Home / 259,115,815.20-388,673,722.80-67,639,591.20

Finding the Fourth Proportional to 259,115,815.20, 388,673,722.80 and 67,639,591.20

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Solution

The fourth proportional to 259,115,815.20, 388,673,722.80 and 67,639,591.20 is: 101,459,386.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,115,815.20 : 388,673,722.80 = 67,639,591.20 : x
  2. Step 2: Convert to fraction form
    259,115,815.20/388,673,722.80 = 67,639,591.20/x
  3. Step 3: Cross multiply
    259,115,815.20x = 388,673,722.80 × 67,639,591.20
  4. Step 4: Simplify right side
    259,115,815.20x = 26,289,731,720,374,120
  5. Step 5: Solve for x
    x = 26,289,731,720,374,120/259,115,815.20
  6. Step 6: Final answer
    x = 101,459,386.80

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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.