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Finding the Fourth Proportional to 271,489.60, 406,975.20 and 211,484.80

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Solution

The fourth proportional to 271,489.60, 406,975.20 and 211,484.80 is: 317,025.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,489.60 : 406,975.20 = 211,484.80 : x
  2. Step 2: Convert to fraction form
    271,489.60/406,975.20 = 211,484.80/x
  3. Step 3: Cross multiply
    271,489.60x = 406,975.20 × 211,484.80
  4. Step 4: Simplify right side
    271,489.60x = 86,069,068,776.96
  5. Step 5: Solve for x
    x = 86,069,068,776.96/271,489.60
  6. Step 6: Final answer
    x = 317,025.29

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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.