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Finding the Fourth Proportional to 208,182.40, 312,196.80 and 67,945.60

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Solution

The fourth proportional to 208,182.40, 312,196.80 and 67,945.60 is: 101,893.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,182.40 : 312,196.80 = 67,945.60 : x
  2. Step 2: Convert to fraction form
    208,182.40/312,196.80 = 67,945.60/x
  3. Step 3: Cross multiply
    208,182.40x = 312,196.80 × 67,945.60
  4. Step 4: Simplify right side
    208,182.40x = 21,212,398,894.08
  5. Step 5: Solve for x
    x = 21,212,398,894.08/208,182.40
  6. Step 6: Final answer
    x = 101,893.33

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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.