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Finding the Fourth Proportional to 353,203.20, 485,740.80 and 325,209.60

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Solution

The fourth proportional to 353,203.20, 485,740.80 and 325,209.60 is: 447,242.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,203.20 : 485,740.80 = 325,209.60 : x
  2. Step 2: Convert to fraction form
    353,203.20/485,740.80 = 325,209.60/x
  3. Step 3: Cross multiply
    353,203.20x = 485,740.80 × 325,209.60
  4. Step 4: Simplify right side
    353,203.20x = 157,967,571,271.68
  5. Step 5: Solve for x
    x = 157,967,571,271.68/353,203.20
  6. Step 6: Final answer
    x = 447,242.75

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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.