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Finding the Fourth Proportional to 326,081.70, 489,122.55 and 192,893.40

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Solution

The fourth proportional to 326,081.70, 489,122.55 and 192,893.40 is: 289,340.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,081.70 : 489,122.55 = 192,893.40 : x
  2. Step 2: Convert to fraction form
    326,081.70/489,122.55 = 192,893.40/x
  3. Step 3: Cross multiply
    326,081.70x = 489,122.55 × 192,893.40
  4. Step 4: Simplify right side
    326,081.70x = 94,348,511,686.17
  5. Step 5: Solve for x
    x = 94,348,511,686.17/326,081.70
  6. Step 6: Final answer
    x = 289,340.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.