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Finding the Fourth Proportional to 355,016.64, 489,919.72 and 193,871.18

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Solution

The fourth proportional to 355,016.64, 489,919.72 and 193,871.18 is: 267,540.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,016.64 : 489,919.72 = 193,871.18 : x
  2. Step 2: Convert to fraction form
    355,016.64/489,919.72 = 193,871.18/x
  3. Step 3: Cross multiply
    355,016.64x = 489,919.72 × 193,871.18
  4. Step 4: Simplify right side
    355,016.64x = 94,981,314,221.67
  5. Step 5: Solve for x
    x = 94,981,314,221.67/355,016.64
  6. Step 6: Final answer
    x = 267,540.46

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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.