Home / 214,485-321,749.38-74,243.22

Finding the Fourth Proportional to 214,485, 321,749.38 and 74,243.22

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Solution

The fourth proportional to 214,485, 321,749.38 and 74,243.22 is: 111,372.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,485 : 321,749.38 = 74,243.22 : x
  2. Step 2: Convert to fraction form
    214,485/321,749.38 = 74,243.22/x
  3. Step 3: Cross multiply
    214,485x = 321,749.38 × 74,243.22
  4. Step 4: Simplify right side
    214,485x = 23,887,710,004.20
  5. Step 5: Solve for x
    x = 23,887,710,004.20/214,485
  6. Step 6: Final answer
    x = 111,372.40

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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.