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Finding the Fourth Proportional to 348,086.40, 522,129.60 and 327,091.20

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Solution

The fourth proportional to 348,086.40, 522,129.60 and 327,091.20 is: 490,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,086.40 : 522,129.60 = 327,091.20 : x
  2. Step 2: Convert to fraction form
    348,086.40/522,129.60 = 327,091.20/x
  3. Step 3: Cross multiply
    348,086.40x = 522,129.60 × 327,091.20
  4. Step 4: Simplify right side
    348,086.40x = 170,783,997,419.52
  5. Step 5: Solve for x
    x = 170,783,997,419.52/348,086.40
  6. Step 6: Final answer
    x = 490,636.80

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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.