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Finding the Fourth Proportional to 271,939,611.20, 407,909,416.80 and 245,065,755.20

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Solution

The fourth proportional to 271,939,611.20, 407,909,416.80 and 245,065,755.20 is: 367,598,632.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,939,611.20 : 407,909,416.80 = 245,065,755.20 : x
  2. Step 2: Convert to fraction form
    271,939,611.20/407,909,416.80 = 245,065,755.20/x
  3. Step 3: Cross multiply
    271,939,611.20x = 407,909,416.80 × 245,065,755.20
  4. Step 4: Simplify right side
    271,939,611.20x = 99,964,629,281,283,568
  5. Step 5: Solve for x
    x = 99,964,629,281,283,568/271,939,611.20
  6. Step 6: Final answer
    x = 367,598,632.80

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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.