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Finding the Fourth Proportional to 328,843.40, 493,265.10 and 162,955.40

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Solution

The fourth proportional to 328,843.40, 493,265.10 and 162,955.40 is: 244,433.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,843.40 : 493,265.10 = 162,955.40 : x
  2. Step 2: Convert to fraction form
    328,843.40/493,265.10 = 162,955.40/x
  3. Step 3: Cross multiply
    328,843.40x = 493,265.10 × 162,955.40
  4. Step 4: Simplify right side
    328,843.40x = 80,380,211,676.54
  5. Step 5: Solve for x
    x = 80,380,211,676.54/328,843.40
  6. Step 6: Final answer
    x = 244,433.10

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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.