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Finding the Fourth Proportional to 318,056.97, 438,982.44 and 188,970.60

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Solution

The fourth proportional to 318,056.97, 438,982.44 and 188,970.60 is: 260,817.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,056.97 : 438,982.44 = 188,970.60 : x
  2. Step 2: Convert to fraction form
    318,056.97/438,982.44 = 188,970.60/x
  3. Step 3: Cross multiply
    318,056.97x = 438,982.44 × 188,970.60
  4. Step 4: Simplify right side
    318,056.97x = 82,954,775,076.26
  5. Step 5: Solve for x
    x = 82,954,775,076.26/318,056.97
  6. Step 6: Final answer
    x = 260,817.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.