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Finding the Fourth Proportional to 323,080.40, 484,447.80 and 135,880.40

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Solution

The fourth proportional to 323,080.40, 484,447.80 and 135,880.40 is: 203,747.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,080.40 : 484,447.80 = 135,880.40 : x
  2. Step 2: Convert to fraction form
    323,080.40/484,447.80 = 135,880.40/x
  3. Step 3: Cross multiply
    323,080.40x = 484,447.80 × 135,880.40
  4. Step 4: Simplify right side
    323,080.40x = 65,826,960,843.12
  5. Step 5: Solve for x
    x = 65,826,960,843.12/323,080.40
  6. Step 6: Final answer
    x = 203,747.92

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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.