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Finding the Fourth Proportional to 365,968.56, 504,134.22 and 311,345.79

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Solution

The fourth proportional to 365,968.56, 504,134.22 and 311,345.79 is: 428,889.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,968.56 : 504,134.22 = 311,345.79 : x
  2. Step 2: Convert to fraction form
    365,968.56/504,134.22 = 311,345.79/x
  3. Step 3: Cross multiply
    365,968.56x = 504,134.22 × 311,345.79
  4. Step 4: Simplify right side
    365,968.56x = 156,960,066,991.93
  5. Step 5: Solve for x
    x = 156,960,066,991.93/365,968.56
  6. Step 6: Final answer
    x = 428,889.48

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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.