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Finding the Fourth Proportional to 299,399.20, 448,442.70 and 260,033.20

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Solution

The fourth proportional to 299,399.20, 448,442.70 and 260,033.20 is: 389,479.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,399.20 : 448,442.70 = 260,033.20 : x
  2. Step 2: Convert to fraction form
    299,399.20/448,442.70 = 260,033.20/x
  3. Step 3: Cross multiply
    299,399.20x = 448,442.70 × 260,033.20
  4. Step 4: Simplify right side
    299,399.20x = 116,609,990,297.64
  5. Step 5: Solve for x
    x = 116,609,990,297.64/299,399.20
  6. Step 6: Final answer
    x = 389,479.97

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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.