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Finding the Fourth Proportional to 328,021.80, 492,032.70 and 162,133.80

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Solution

The fourth proportional to 328,021.80, 492,032.70 and 162,133.80 is: 243,200.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,021.80 : 492,032.70 = 162,133.80 : x
  2. Step 2: Convert to fraction form
    328,021.80/492,032.70 = 162,133.80/x
  3. Step 3: Cross multiply
    328,021.80x = 492,032.70 × 162,133.80
  4. Step 4: Simplify right side
    328,021.80x = 79,775,131,375.26
  5. Step 5: Solve for x
    x = 79,775,131,375.26/328,021.80
  6. Step 6: Final answer
    x = 243,200.70

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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.