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Finding the Fourth Proportional to 271,511.10, 407,266.65 and 74,519.10

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Solution

The fourth proportional to 271,511.10, 407,266.65 and 74,519.10 is: 111,778.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,511.10 : 407,266.65 = 74,519.10 : x
  2. Step 2: Convert to fraction form
    271,511.10/407,266.65 = 74,519.10/x
  3. Step 3: Cross multiply
    271,511.10x = 407,266.65 × 74,519.10
  4. Step 4: Simplify right side
    271,511.10x = 30,349,144,218.02
  5. Step 5: Solve for x
    x = 30,349,144,218.02/271,511.10
  6. Step 6: Final answer
    x = 111,778.65

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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.