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Finding the Fourth Proportional to 319,704.60, 479,816.10 and 309,336.60

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Solution

The fourth proportional to 319,704.60, 479,816.10 and 309,336.60 is: 464,255.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,704.60 : 479,816.10 = 309,336.60 : x
  2. Step 2: Convert to fraction form
    319,704.60/479,816.10 = 309,336.60/x
  3. Step 3: Cross multiply
    319,704.60x = 479,816.10 × 309,336.60
  4. Step 4: Simplify right side
    319,704.60x = 148,424,680,999.26
  5. Step 5: Solve for x
    x = 148,424,680,999.26/319,704.60
  6. Step 6: Final answer
    x = 464,255.69

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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.