Home / 214,632.40-321,948.60-74,405.20

Finding the Fourth Proportional to 214,632.40, 321,948.60 and 74,405.20

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Solution

The fourth proportional to 214,632.40, 321,948.60 and 74,405.20 is: 111,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,632.40 : 321,948.60 = 74,405.20 : x
  2. Step 2: Convert to fraction form
    214,632.40/321,948.60 = 74,405.20/x
  3. Step 3: Cross multiply
    214,632.40x = 321,948.60 × 74,405.20
  4. Step 4: Simplify right side
    214,632.40x = 23,954,649,972.72
  5. Step 5: Solve for x
    x = 23,954,649,972.72/214,632.40
  6. Step 6: Final answer
    x = 111,607.80

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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.