Home / 258,628,000.80-387,942,001.20-105,195,079.20

Finding the Fourth Proportional to 258,628,000.80, 387,942,001.20 and 105,195,079.20

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Solution

The fourth proportional to 258,628,000.80, 387,942,001.20 and 105,195,079.20 is: 157,792,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,628,000.80 : 387,942,001.20 = 105,195,079.20 : x
  2. Step 2: Convert to fraction form
    258,628,000.80/387,942,001.20 = 105,195,079.20/x
  3. Step 3: Cross multiply
    258,628,000.80x = 387,942,001.20 × 105,195,079.20
  4. Step 4: Simplify right side
    258,628,000.80x = 40,809,589,541,240,496
  5. Step 5: Solve for x
    x = 40,809,589,541,240,496/258,628,000.80
  6. Step 6: Final answer
    x = 157,792,618.80

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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.