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Finding the Fourth Proportional to 272,080.20, 408,120.30 and 171,915.60

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Solution

The fourth proportional to 272,080.20, 408,120.30 and 171,915.60 is: 257,873.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,080.20 : 408,120.30 = 171,915.60 : x
  2. Step 2: Convert to fraction form
    272,080.20/408,120.30 = 171,915.60/x
  3. Step 3: Cross multiply
    272,080.20x = 408,120.30 × 171,915.60
  4. Step 4: Simplify right side
    272,080.20x = 70,162,246,246.68
  5. Step 5: Solve for x
    x = 70,162,246,246.68/272,080.20
  6. Step 6: Final answer
    x = 257,873.40

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1.5x scale

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.