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Finding the Fourth Proportional to 305,728.70, 421,608.66 and 237,625.52

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Solution

The fourth proportional to 305,728.70, 421,608.66 and 237,625.52 is: 327,692.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,728.70 : 421,608.66 = 237,625.52 : x
  2. Step 2: Convert to fraction form
    305,728.70/421,608.66 = 237,625.52/x
  3. Step 3: Cross multiply
    305,728.70x = 421,608.66 × 237,625.52
  4. Step 4: Simplify right side
    305,728.70x = 100,184,977,069.00
  5. Step 5: Solve for x
    x = 100,184,977,069.00/305,728.70
  6. Step 6: Final answer
    x = 327,692.42

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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.