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Finding the Fourth Proportional to 319,479.48, 440,879.22 and 176,245.56

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Solution

The fourth proportional to 319,479.48, 440,879.22 and 176,245.56 is: 243,217.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,479.48 : 440,879.22 = 176,245.56 : x
  2. Step 2: Convert to fraction form
    319,479.48/440,879.22 = 176,245.56/x
  3. Step 3: Cross multiply
    319,479.48x = 440,879.22 × 176,245.56
  4. Step 4: Simplify right side
    319,479.48x = 77,703,005,021.26
  5. Step 5: Solve for x
    x = 77,703,005,021.26/319,479.48
  6. Step 6: Final answer
    x = 243,217.51

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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.