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Finding the Fourth Proportional to 448,676.28, 673,009.56 and 259,421.40

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Solution

The fourth proportional to 448,676.28, 673,009.56 and 259,421.40 is: 389,129.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,676.28 : 673,009.56 = 259,421.40 : x
  2. Step 2: Convert to fraction form
    448,676.28/673,009.56 = 259,421.40/x
  3. Step 3: Cross multiply
    448,676.28x = 673,009.56 × 259,421.40
  4. Step 4: Simplify right side
    448,676.28x = 174,593,082,268.58
  5. Step 5: Solve for x
    x = 174,593,082,268.58/448,676.28
  6. Step 6: Final answer
    x = 389,129.29

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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.