Home / 258,969,991.40-388,454,987.10-67,493,767.40

Finding the Fourth Proportional to 258,969,991.40, 388,454,987.10 and 67,493,767.40

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Solution

The fourth proportional to 258,969,991.40, 388,454,987.10 and 67,493,767.40 is: 101,240,651.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,969,991.40 : 388,454,987.10 = 67,493,767.40 : x
  2. Step 2: Convert to fraction form
    258,969,991.40/388,454,987.10 = 67,493,767.40/x
  3. Step 3: Cross multiply
    258,969,991.40x = 388,454,987.10 × 67,493,767.40
  4. Step 4: Simplify right side
    258,969,991.40x = 26,218,290,544,697,404
  5. Step 5: Solve for x
    x = 26,218,290,544,697,404/258,969,991.40
  6. Step 6: Final answer
    x = 101,240,651.10

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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.