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Finding the Fourth Proportional to 274,625.60, 385,028.80 and 274,625.60

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Solution

The fourth proportional to 274,625.60, 385,028.80 and 274,625.60 is: 385,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,625.60 : 385,028.80 = 274,625.60 : x
  2. Step 2: Convert to fraction form
    274,625.60/385,028.80 = 274,625.60/x
  3. Step 3: Cross multiply
    274,625.60x = 385,028.80 × 274,625.60
  4. Step 4: Simplify right side
    274,625.60x = 105,738,765,217.28
  5. Step 5: Solve for x
    x = 105,738,765,217.28/274,625.60
  6. Step 6: Final answer
    x = 385,028.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.