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Finding the Fourth Proportional to 547,208.80, 820,813.20 and 192,104.80

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Solution

The fourth proportional to 547,208.80, 820,813.20 and 192,104.80 is: 288,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,208.80 : 820,813.20 = 192,104.80 : x
  2. Step 2: Convert to fraction form
    547,208.80/820,813.20 = 192,104.80/x
  3. Step 3: Cross multiply
    547,208.80x = 820,813.20 × 192,104.80
  4. Step 4: Simplify right side
    547,208.80x = 157,682,155,623.36
  5. Step 5: Solve for x
    x = 157,682,155,623.36/547,208.80
  6. Step 6: Final answer
    x = 288,157.20

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Similar ratio
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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.