Home / 213,893.58-321,155.77-119,308.56

Finding the Fourth Proportional to 213,893.58, 321,155.77 and 119,308.56

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Solution

The fourth proportional to 213,893.58, 321,155.77 and 119,308.56 is: 179,138.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,893.58 : 321,155.77 = 119,308.56 : x
  2. Step 2: Convert to fraction form
    213,893.58/321,155.77 = 119,308.56/x
  3. Step 3: Cross multiply
    213,893.58x = 321,155.77 × 119,308.56
  4. Step 4: Simplify right side
    213,893.58x = 38,316,632,981.99
  5. Step 5: Solve for x
    x = 38,316,632,981.99/213,893.58
  6. Step 6: Final answer
    x = 179,138.77

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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.