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Finding the Fourth Proportional to 370,561.75, 511,379.24 and 217,601.75

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Solution

The fourth proportional to 370,561.75, 511,379.24 and 217,601.75 is: 300,292.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,561.75 : 511,379.24 = 217,601.75 : x
  2. Step 2: Convert to fraction form
    370,561.75/511,379.24 = 217,601.75/x
  3. Step 3: Cross multiply
    370,561.75x = 511,379.24 × 217,601.75
  4. Step 4: Simplify right side
    370,561.75x = 111,277,017,728.11
  5. Step 5: Solve for x
    x = 111,277,017,728.11/370,561.75
  6. Step 6: Final answer
    x = 300,292.78

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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.