Home / 213,897.45-321,161.58-119,312.43

Finding the Fourth Proportional to 213,897.45, 321,161.58 and 119,312.43

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Solution

The fourth proportional to 213,897.45, 321,161.58 and 119,312.43 is: 179,144.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,897.45 : 321,161.58 = 119,312.43 : x
  2. Step 2: Convert to fraction form
    213,897.45/321,161.58 = 119,312.43/x
  3. Step 3: Cross multiply
    213,897.45x = 321,161.58 × 119,312.43
  4. Step 4: Simplify right side
    213,897.45x = 38,318,568,532.44
  5. Step 5: Solve for x
    x = 38,318,568,532.44/213,897.45
  6. Step 6: Final answer
    x = 179,144.58

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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.