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Finding the Fourth Proportional to 387,670.20, 582,801.30 and 336,348.60

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Solution

The fourth proportional to 387,670.20, 582,801.30 and 336,348.60 is: 505,647.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,670.20 : 582,801.30 = 336,348.60 : x
  2. Step 2: Convert to fraction form
    387,670.20/582,801.30 = 336,348.60/x
  3. Step 3: Cross multiply
    387,670.20x = 582,801.30 × 336,348.60
  4. Step 4: Simplify right side
    387,670.20x = 196,024,401,333.18
  5. Step 5: Solve for x
    x = 196,024,401,333.18/387,670.20
  6. Step 6: Final answer
    x = 505,647.33

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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.