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Finding the Fourth Proportional to 236,662.20, 354,906.90 and 78,895.80

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Solution

The fourth proportional to 236,662.20, 354,906.90 and 78,895.80 is: 118,314.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,662.20 : 354,906.90 = 78,895.80 : x
  2. Step 2: Convert to fraction form
    236,662.20/354,906.90 = 78,895.80/x
  3. Step 3: Cross multiply
    236,662.20x = 354,906.90 × 78,895.80
  4. Step 4: Simplify right side
    236,662.20x = 28,000,663,801.02
  5. Step 5: Solve for x
    x = 28,000,663,801.02/236,662.20
  6. Step 6: Final answer
    x = 118,314.90

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1.5x scale

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.