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Finding the Fourth Proportional to 328,647.40, 492,776.70 and 171,183.40

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Solution

The fourth proportional to 328,647.40, 492,776.70 and 171,183.40 is: 256,673.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,647.40 : 492,776.70 = 171,183.40 : x
  2. Step 2: Convert to fraction form
    328,647.40/492,776.70 = 171,183.40/x
  3. Step 3: Cross multiply
    328,647.40x = 492,776.70 × 171,183.40
  4. Step 4: Simplify right side
    328,647.40x = 84,355,190,946.78
  5. Step 5: Solve for x
    x = 84,355,190,946.78/328,647.40
  6. Step 6: Final answer
    x = 256,673.84

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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.