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Finding the Fourth Proportional to 351,901.15, 485,310.03 and 274,396

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Solution

The fourth proportional to 351,901.15, 485,310.03 and 274,396 is: 378,421.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,901.15 : 485,310.03 = 274,396 : x
  2. Step 2: Convert to fraction form
    351,901.15/485,310.03 = 274,396/x
  3. Step 3: Cross multiply
    351,901.15x = 485,310.03 × 274,396
  4. Step 4: Simplify right side
    351,901.15x = 133,167,130,991.88
  5. Step 5: Solve for x
    x = 133,167,130,991.88/351,901.15
  6. Step 6: Final answer
    x = 378,421.98

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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.