Home / 258,990,403.95-387,789,460.22-197,285,619.80

Finding the Fourth Proportional to 258,990,403.95, 387,789,460.22 and 197,285,619.80

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Solution

The fourth proportional to 258,990,403.95, 387,789,460.22 and 197,285,619.80 is: 295,398,141.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,990,403.95 : 387,789,460.22 = 197,285,619.80 : x
  2. Step 2: Convert to fraction form
    258,990,403.95/387,789,460.22 = 197,285,619.80/x
  3. Step 3: Cross multiply
    258,990,403.95x = 387,789,460.22 × 197,285,619.80
  4. Step 4: Simplify right side
    258,990,403.95x = 76,505,284,012,872,848
  5. Step 5: Solve for x
    x = 76,505,284,012,872,848/258,990,403.95
  6. Step 6: Final answer
    x = 295,398,141.58

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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.