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Finding the Fourth Proportional to 326,051.70, 489,320.55 and 168,198.90

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Solution

The fourth proportional to 326,051.70, 489,320.55 and 168,198.90 is: 252,423.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,051.70 : 489,320.55 = 168,198.90 : x
  2. Step 2: Convert to fraction form
    326,051.70/489,320.55 = 168,198.90/x
  3. Step 3: Cross multiply
    326,051.70x = 489,320.55 × 168,198.90
  4. Step 4: Simplify right side
    326,051.70x = 82,303,178,257.40
  5. Step 5: Solve for x
    x = 82,303,178,257.40/326,051.70
  6. Step 6: Final answer
    x = 252,423.71

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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.