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Finding the Fourth Proportional to 365,969.56, 504,135.60 and 311,346.79

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Solution

The fourth proportional to 365,969.56, 504,135.60 and 311,346.79 is: 428,890.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,969.56 : 504,135.60 = 311,346.79 : x
  2. Step 2: Convert to fraction form
    365,969.56/504,135.60 = 311,346.79/x
  3. Step 3: Cross multiply
    365,969.56x = 504,135.60 × 311,346.79
  4. Step 4: Simplify right side
    365,969.56x = 156,961,000,784.72
  5. Step 5: Solve for x
    x = 156,961,000,784.72/365,969.56
  6. Step 6: Final answer
    x = 428,890.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.