Home / 286,716.78-395,682.66-159,394.50

Finding the Fourth Proportional to 286,716.78, 395,682.66 and 159,394.50

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Solution

The fourth proportional to 286,716.78, 395,682.66 and 159,394.50 is: 219,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,716.78 : 395,682.66 = 159,394.50 : x
  2. Step 2: Convert to fraction form
    286,716.78/395,682.66 = 159,394.50/x
  3. Step 3: Cross multiply
    286,716.78x = 395,682.66 × 159,394.50
  4. Step 4: Simplify right side
    286,716.78x = 63,069,639,749.37
  5. Step 5: Solve for x
    x = 63,069,639,749.37/286,716.78
  6. Step 6: Final answer
    x = 219,971.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.