Home / 214,618.40-321,985.20-191,405.60

Finding the Fourth Proportional to 214,618.40, 321,985.20 and 191,405.60

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Solution

The fourth proportional to 214,618.40, 321,985.20 and 191,405.60 is: 287,159.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,618.40 : 321,985.20 = 191,405.60 : x
  2. Step 2: Convert to fraction form
    214,618.40/321,985.20 = 191,405.60/x
  3. Step 3: Cross multiply
    214,618.40x = 321,985.20 × 191,405.60
  4. Step 4: Simplify right side
    214,618.40x = 61,629,770,397.12
  5. Step 5: Solve for x
    x = 61,629,770,397.12/214,618.40
  6. Step 6: Final answer
    x = 287,159.77

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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.