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Finding the Fourth Proportional to 271,303.80, 406,949.30 and 74,311.80

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Solution

The fourth proportional to 271,303.80, 406,949.30 and 74,311.80 is: 111,465.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,303.80 : 406,949.30 = 74,311.80 : x
  2. Step 2: Convert to fraction form
    271,303.80/406,949.30 = 74,311.80/x
  3. Step 3: Cross multiply
    271,303.80x = 406,949.30 × 74,311.80
  4. Step 4: Simplify right side
    271,303.80x = 30,241,134,991.74
  5. Step 5: Solve for x
    x = 30,241,134,991.74/271,303.80
  6. Step 6: Final answer
    x = 111,465.95

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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.