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Finding the Fourth Proportional to 395,111.60, 591,792.60 and 325,127.60

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Solution

The fourth proportional to 395,111.60, 591,792.60 and 325,127.60 is: 486,971.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,111.60 : 591,792.60 = 325,127.60 : x
  2. Step 2: Convert to fraction form
    395,111.60/591,792.60 = 325,127.60/x
  3. Step 3: Cross multiply
    395,111.60x = 591,792.60 × 325,127.60
  4. Step 4: Simplify right side
    395,111.60x = 192,408,107,735.76
  5. Step 5: Solve for x
    x = 192,408,107,735.76/395,111.60
  6. Step 6: Final answer
    x = 486,971.55

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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.