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Finding the Fourth Proportional to 299,673.20, 449,279.40 and 168,345.20

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Solution

The fourth proportional to 299,673.20, 449,279.40 and 168,345.20 is: 252,388.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,673.20 : 449,279.40 = 168,345.20 : x
  2. Step 2: Convert to fraction form
    299,673.20/449,279.40 = 168,345.20/x
  3. Step 3: Cross multiply
    299,673.20x = 449,279.40 × 168,345.20
  4. Step 4: Simplify right side
    299,673.20x = 75,634,030,448.88
  5. Step 5: Solve for x
    x = 75,634,030,448.88/299,673.20
  6. Step 6: Final answer
    x = 252,388.37

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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.