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Finding the Fourth Proportional to 310,861.20, 465,514.20 and 248,653.20

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Solution

The fourth proportional to 310,861.20, 465,514.20 and 248,653.20 is: 372,357.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,861.20 : 465,514.20 = 248,653.20 : x
  2. Step 2: Convert to fraction form
    310,861.20/465,514.20 = 248,653.20/x
  3. Step 3: Cross multiply
    310,861.20x = 465,514.20 × 248,653.20
  4. Step 4: Simplify right side
    310,861.20x = 115,751,595,475.44
  5. Step 5: Solve for x
    x = 115,751,595,475.44/310,861.20
  6. Step 6: Final answer
    x = 372,357.81

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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.