Home / 259,111,879.74-388,667,819.64-86,588,693.24

Finding the Fourth Proportional to 259,111,879.74, 388,667,819.64 and 86,588,693.24

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Solution

The fourth proportional to 259,111,879.74, 388,667,819.64 and 86,588,693.24 is: 129,883,039.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,111,879.74 : 388,667,819.64 = 86,588,693.24 : x
  2. Step 2: Convert to fraction form
    259,111,879.74/388,667,819.64 = 86,588,693.24/x
  3. Step 3: Cross multiply
    259,111,879.74x = 388,667,819.64 × 86,588,693.24
  4. Step 4: Simplify right side
    259,111,879.74x = 33,654,238,605,124,268
  5. Step 5: Solve for x
    x = 33,654,238,605,124,268/259,111,879.74
  6. Step 6: Final answer
    x = 129,883,039.86

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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.