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Finding the Fourth Proportional to 623,310.90, 936,003.15 and 343,029.30

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Solution

The fourth proportional to 623,310.90, 936,003.15 and 343,029.30 is: 515,114.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,310.90 : 936,003.15 = 343,029.30 : x
  2. Step 2: Convert to fraction form
    623,310.90/936,003.15 = 343,029.30/x
  3. Step 3: Cross multiply
    623,310.90x = 936,003.15 × 343,029.30
  4. Step 4: Simplify right side
    623,310.90x = 321,076,505,342.30
  5. Step 5: Solve for x
    x = 321,076,505,342.30/623,310.90
  6. Step 6: Final answer
    x = 515,114.54

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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.