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Finding the Fourth Proportional to 354,958.55, 489,862.64 and 193,828.55

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Solution

The fourth proportional to 354,958.55, 489,862.64 and 193,828.55 is: 267,494.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,958.55 : 489,862.64 = 193,828.55 : x
  2. Step 2: Convert to fraction form
    354,958.55/489,862.64 = 193,828.55/x
  3. Step 3: Cross multiply
    354,958.55x = 489,862.64 × 193,828.55
  4. Step 4: Simplify right side
    354,958.55x = 94,949,365,210.37
  5. Step 5: Solve for x
    x = 94,949,365,210.37/354,958.55
  6. Step 6: Final answer
    x = 267,494.23

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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.