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Finding the Fourth Proportional to 605,391.80, 908,087.70 and 281,147.24

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Solution

The fourth proportional to 605,391.80, 908,087.70 and 281,147.24 is: 421,720.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,391.80 : 908,087.70 = 281,147.24 : x
  2. Step 2: Convert to fraction form
    605,391.80/908,087.70 = 281,147.24/x
  3. Step 3: Cross multiply
    605,391.80x = 908,087.70 × 281,147.24
  4. Step 4: Simplify right side
    605,391.80x = 255,306,350,532.95
  5. Step 5: Solve for x
    x = 255,306,350,532.95/605,391.80
  6. Step 6: Final answer
    x = 421,720.86

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Similar ratio
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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.