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Finding the Fourth Proportional to 236,468.80, 354,735.60 and 78,680.80

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Solution

The fourth proportional to 236,468.80, 354,735.60 and 78,680.80 is: 118,031.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,468.80 : 354,735.60 = 78,680.80 : x
  2. Step 2: Convert to fraction form
    236,468.80/354,735.60 = 78,680.80/x
  3. Step 3: Cross multiply
    236,468.80x = 354,735.60 × 78,680.80
  4. Step 4: Simplify right side
    236,468.80x = 27,910,880,796.48
  5. Step 5: Solve for x
    x = 27,910,880,796.48/236,468.80
  6. Step 6: Final answer
    x = 118,031.98

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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.