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Finding the Fourth Proportional to 384,287.67, 529,143.03 and 348,243.21

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Solution

The fourth proportional to 384,287.67, 529,143.03 and 348,243.21 is: 479,511.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,287.67 : 529,143.03 = 348,243.21 : x
  2. Step 2: Convert to fraction form
    384,287.67/529,143.03 = 348,243.21/x
  3. Step 3: Cross multiply
    384,287.67x = 529,143.03 × 348,243.21
  4. Step 4: Simplify right side
    384,287.67x = 184,270,467,316.33
  5. Step 5: Solve for x
    x = 184,270,467,316.33/384,287.67
  6. Step 6: Final answer
    x = 479,511.79

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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.