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Finding the Fourth Proportional to 448,577.12, 672,979 and 149,059.28

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Solution

The fourth proportional to 448,577.12, 672,979 and 149,059.28 is: 223,626.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,577.12 : 672,979 = 149,059.28 : x
  2. Step 2: Convert to fraction form
    448,577.12/672,979 = 149,059.28/x
  3. Step 3: Cross multiply
    448,577.12x = 672,979 × 149,059.28
  4. Step 4: Simplify right side
    448,577.12x = 100,313,765,195.12
  5. Step 5: Solve for x
    x = 100,313,765,195.12/448,577.12
  6. Step 6: Final answer
    x = 223,626.58

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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.