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Finding the Fourth Proportional to 354,900.52, 489,744.31 and 201,935.61

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Solution

The fourth proportional to 354,900.52, 489,744.31 and 201,935.61 is: 278,660.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,900.52 : 489,744.31 = 201,935.61 : x
  2. Step 2: Convert to fraction form
    354,900.52/489,744.31 = 201,935.61/x
  3. Step 3: Cross multiply
    354,900.52x = 489,744.31 × 201,935.61
  4. Step 4: Simplify right side
    354,900.52x = 98,896,815,983.88
  5. Step 5: Solve for x
    x = 98,896,815,983.88/354,900.52
  6. Step 6: Final answer
    x = 278,660.67

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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.