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Finding the Fourth Proportional to 271,212.60, 406,818.90 and 74,220.60

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Solution

The fourth proportional to 271,212.60, 406,818.90 and 74,220.60 is: 111,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,212.60 : 406,818.90 = 74,220.60 : x
  2. Step 2: Convert to fraction form
    271,212.60/406,818.90 = 74,220.60/x
  3. Step 3: Cross multiply
    271,212.60x = 406,818.90 × 74,220.60
  4. Step 4: Simplify right side
    271,212.60x = 30,194,342,849.34
  5. Step 5: Solve for x
    x = 30,194,342,849.34/271,212.60
  6. Step 6: Final answer
    x = 111,330.90

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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.