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Finding the Fourth Proportional to 403,728.60, 605,374.20 and 166,803.60

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Solution

The fourth proportional to 403,728.60, 605,374.20 and 166,803.60 is: 250,115.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,728.60 : 605,374.20 = 166,803.60 : x
  2. Step 2: Convert to fraction form
    403,728.60/605,374.20 = 166,803.60/x
  3. Step 3: Cross multiply
    403,728.60x = 605,374.20 × 166,803.60
  4. Step 4: Simplify right side
    403,728.60x = 100,978,595,907.12
  5. Step 5: Solve for x
    x = 100,978,595,907.12/403,728.60
  6. Step 6: Final answer
    x = 250,115.04

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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.