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Finding the Fourth Proportional to 505,090.80, 757,927.80 and 189,579.60

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Solution

The fourth proportional to 505,090.80, 757,927.80 and 189,579.60 is: 284,478.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,090.80 : 757,927.80 = 189,579.60 : x
  2. Step 2: Convert to fraction form
    505,090.80/757,927.80 = 189,579.60/x
  3. Step 3: Cross multiply
    505,090.80x = 757,927.80 × 189,579.60
  4. Step 4: Simplify right side
    505,090.80x = 143,687,649,152.88
  5. Step 5: Solve for x
    x = 143,687,649,152.88/505,090.80
  6. Step 6: Final answer
    x = 284,478.85

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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.