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Finding the Fourth Proportional to 192,645.60, 288,838.80 and 87,410.40

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Solution

The fourth proportional to 192,645.60, 288,838.80 and 87,410.40 is: 131,056.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,645.60 : 288,838.80 = 87,410.40 : x
  2. Step 2: Convert to fraction form
    192,645.60/288,838.80 = 87,410.40/x
  3. Step 3: Cross multiply
    192,645.60x = 288,838.80 × 87,410.40
  4. Step 4: Simplify right side
    192,645.60x = 25,247,515,043.52
  5. Step 5: Solve for x
    x = 25,247,515,043.52/192,645.60
  6. Step 6: Final answer
    x = 131,056.80

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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.