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Finding the Fourth Proportional to 448,622.28, 672,928.56 and 259,367.40

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Solution

The fourth proportional to 448,622.28, 672,928.56 and 259,367.40 is: 389,048.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,622.28 : 672,928.56 = 259,367.40 : x
  2. Step 2: Convert to fraction form
    448,622.28/672,928.56 = 259,367.40/x
  3. Step 3: Cross multiply
    448,622.28x = 672,928.56 × 259,367.40
  4. Step 4: Simplify right side
    448,622.28x = 174,535,730,992.94
  5. Step 5: Solve for x
    x = 174,535,730,992.94/448,622.28
  6. Step 6: Final answer
    x = 389,048.29

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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.