Home / 328,183.10-492,274.65-78,865.10

Finding the Fourth Proportional to 328,183.10, 492,274.65 and 78,865.10

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Solution

The fourth proportional to 328,183.10, 492,274.65 and 78,865.10 is: 118,297.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,183.10 : 492,274.65 = 78,865.10 : x
  2. Step 2: Convert to fraction form
    328,183.10/492,274.65 = 78,865.10/x
  3. Step 3: Cross multiply
    328,183.10x = 492,274.65 × 78,865.10
  4. Step 4: Simplify right side
    328,183.10x = 38,823,289,499.72
  5. Step 5: Solve for x
    x = 38,823,289,499.72/328,183.10
  6. Step 6: Final answer
    x = 118,297.65

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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.