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Finding the Fourth Proportional to 319,388.74, 478,086.62 and 235,243.92

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Solution

The fourth proportional to 319,388.74, 478,086.62 and 235,243.92 is: 352,131.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,388.74 : 478,086.62 = 235,243.92 : x
  2. Step 2: Convert to fraction form
    319,388.74/478,086.62 = 235,243.92/x
  3. Step 3: Cross multiply
    319,388.74x = 478,086.62 × 235,243.92
  4. Step 4: Simplify right side
    319,388.74x = 112,466,970,588.35
  5. Step 5: Solve for x
    x = 112,466,970,588.35/319,388.74
  6. Step 6: Final answer
    x = 352,131.92

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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.