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Finding the Fourth Proportional to 271,290.80, 406,929.80 and 74,298.80

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Solution

The fourth proportional to 271,290.80, 406,929.80 and 74,298.80 is: 111,446.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,290.80 : 406,929.80 = 74,298.80 : x
  2. Step 2: Convert to fraction form
    271,290.80/406,929.80 = 74,298.80/x
  3. Step 3: Cross multiply
    271,290.80x = 406,929.80 × 74,298.80
  4. Step 4: Simplify right side
    271,290.80x = 30,234,395,824.24
  5. Step 5: Solve for x
    x = 30,234,395,824.24/271,290.80
  6. Step 6: Final answer
    x = 111,446.45

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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.