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Finding the Fourth Proportional to 354,855.52, 489,701.60 and 193,710.72

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Solution

The fourth proportional to 354,855.52, 489,701.60 and 193,710.72 is: 267,321.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,855.52 : 489,701.60 = 193,710.72 : x
  2. Step 2: Convert to fraction form
    354,855.52/489,701.60 = 193,710.72/x
  3. Step 3: Cross multiply
    354,855.52x = 489,701.60 × 193,710.72
  4. Step 4: Simplify right side
    354,855.52x = 94,860,449,521.15
  5. Step 5: Solve for x
    x = 94,860,449,521.15/354,855.52
  6. Step 6: Final answer
    x = 267,321.33

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1.5x scale

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.