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Finding the Fourth Proportional to 282,324.85, 389,608.95 and 155,008.65

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Solution

The fourth proportional to 282,324.85, 389,608.95 and 155,008.65 is: 213,912.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,324.85 : 389,608.95 = 155,008.65 : x
  2. Step 2: Convert to fraction form
    282,324.85/389,608.95 = 155,008.65/x
  3. Step 3: Cross multiply
    282,324.85x = 389,608.95 × 155,008.65
  4. Step 4: Simplify right side
    282,324.85x = 60,392,757,367.42
  5. Step 5: Solve for x
    x = 60,392,757,367.42/282,324.85
  6. Step 6: Final answer
    x = 213,912.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.