Home / 214,712.40-321,631.20-109,590.60

Finding the Fourth Proportional to 214,712.40, 321,631.20 and 109,590.60

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Solution

The fourth proportional to 214,712.40, 321,631.20 and 109,590.60 is: 164,162.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,712.40 : 321,631.20 = 109,590.60 : x
  2. Step 2: Convert to fraction form
    214,712.40/321,631.20 = 109,590.60/x
  3. Step 3: Cross multiply
    214,712.40x = 321,631.20 × 109,590.60
  4. Step 4: Simplify right side
    214,712.40x = 35,247,756,186.72
  5. Step 5: Solve for x
    x = 35,247,756,186.72/214,712.40
  6. Step 6: Final answer
    x = 164,162.65

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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.