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Finding the Fourth Proportional to 354,986.52, 489,901.32 and 193,856.55

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Solution

The fourth proportional to 354,986.52, 489,901.32 and 193,856.55 is: 267,532.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,986.52 : 489,901.32 = 193,856.55 : x
  2. Step 2: Convert to fraction form
    354,986.52/489,901.32 = 193,856.55/x
  3. Step 3: Cross multiply
    354,986.52x = 489,901.32 × 193,856.55
  4. Step 4: Simplify right side
    354,986.52x = 94,970,579,735.65
  5. Step 5: Solve for x
    x = 94,970,579,735.65/354,986.52
  6. Step 6: Final answer
    x = 267,532.92

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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.