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Finding the Fourth Proportional to 355,989.30, 534,353.10 and 238,481.79

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Solution

The fourth proportional to 355,989.30, 534,353.10 and 238,481.79 is: 357,969.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,989.30 : 534,353.10 = 238,481.79 : x
  2. Step 2: Convert to fraction form
    355,989.30/534,353.10 = 238,481.79/x
  3. Step 3: Cross multiply
    355,989.30x = 534,353.10 × 238,481.79
  4. Step 4: Simplify right side
    355,989.30x = 127,433,483,780.05
  5. Step 5: Solve for x
    x = 127,433,483,780.05/355,989.30
  6. Step 6: Final answer
    x = 357,969.98

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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.