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Finding the Fourth Proportional to 326,103.89, 488,926.68 and 143,648.12

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Solution

The fourth proportional to 326,103.89, 488,926.68 and 143,648.12 is: 215,371.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,103.89 : 488,926.68 = 143,648.12 : x
  2. Step 2: Convert to fraction form
    326,103.89/488,926.68 = 143,648.12/x
  3. Step 3: Cross multiply
    326,103.89x = 488,926.68 × 143,648.12
  4. Step 4: Simplify right side
    326,103.89x = 70,233,399,083.48
  5. Step 5: Solve for x
    x = 70,233,399,083.48/326,103.89
  6. Step 6: Final answer
    x = 215,371.24

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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.