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Finding the Fourth Proportional to 613,477.20, 920,244.60 and 192,766.80

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Solution

The fourth proportional to 613,477.20, 920,244.60 and 192,766.80 is: 289,159.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,477.20 : 920,244.60 = 192,766.80 : x
  2. Step 2: Convert to fraction form
    613,477.20/920,244.60 = 192,766.80/x
  3. Step 3: Cross multiply
    613,477.20x = 920,244.60 × 192,766.80
  4. Step 4: Simplify right side
    613,477.20x = 177,392,606,759.28
  5. Step 5: Solve for x
    x = 177,392,606,759.28/613,477.20
  6. Step 6: Final answer
    x = 289,159.25

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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.