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Finding the Fourth Proportional to 271,759.60, 407,639.40 and 170,720.20

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Solution

The fourth proportional to 271,759.60, 407,639.40 and 170,720.20 is: 256,080.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,759.60 : 407,639.40 = 170,720.20 : x
  2. Step 2: Convert to fraction form
    271,759.60/407,639.40 = 170,720.20/x
  3. Step 3: Cross multiply
    271,759.60x = 407,639.40 × 170,720.20
  4. Step 4: Simplify right side
    271,759.60x = 69,592,279,895.88
  5. Step 5: Solve for x
    x = 69,592,279,895.88/271,759.60
  6. Step 6: Final answer
    x = 256,080.30

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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.