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Finding the Fourth Proportional to 384,801.03, 531,021.69 and 215,035.29

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Solution

The fourth proportional to 384,801.03, 531,021.69 and 215,035.29 is: 296,746.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,801.03 : 531,021.69 = 215,035.29 : x
  2. Step 2: Convert to fraction form
    384,801.03/531,021.69 = 215,035.29/x
  3. Step 3: Cross multiply
    384,801.03x = 531,021.69 × 215,035.29
  4. Step 4: Simplify right side
    384,801.03x = 114,188,403,105.44
  5. Step 5: Solve for x
    x = 114,188,403,105.44/384,801.03
  6. Step 6: Final answer
    x = 296,746.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.