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Finding the Fourth Proportional to 323,539.60, 485,309.40 and 303,856.60

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Solution

The fourth proportional to 323,539.60, 485,309.40 and 303,856.60 is: 455,784.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,539.60 : 485,309.40 = 303,856.60 : x
  2. Step 2: Convert to fraction form
    323,539.60/485,309.40 = 303,856.60/x
  3. Step 3: Cross multiply
    323,539.60x = 485,309.40 × 303,856.60
  4. Step 4: Simplify right side
    323,539.60x = 147,464,464,232.04
  5. Step 5: Solve for x
    x = 147,464,464,232.04/323,539.60
  6. Step 6: Final answer
    x = 455,784.90

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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.