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Finding the Fourth Proportional to 368,625.60, 551,901.60 and 331,300.80

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Solution

The fourth proportional to 368,625.60, 551,901.60 and 331,300.80 is: 496,019.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,625.60 : 551,901.60 = 331,300.80 : x
  2. Step 2: Convert to fraction form
    368,625.60/551,901.60 = 331,300.80/x
  3. Step 3: Cross multiply
    368,625.60x = 551,901.60 × 331,300.80
  4. Step 4: Simplify right side
    368,625.60x = 182,845,441,601.28
  5. Step 5: Solve for x
    x = 182,845,441,601.28/368,625.60
  6. Step 6: Final answer
    x = 496,019.38

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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.