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Finding the Fourth Proportional to 221,692.16, 305,825.57 and 131,004.26

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Solution

The fourth proportional to 221,692.16, 305,825.57 and 131,004.26 is: 180,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,692.16 : 305,825.57 = 131,004.26 : x
  2. Step 2: Convert to fraction form
    221,692.16/305,825.57 = 131,004.26/x
  3. Step 3: Cross multiply
    221,692.16x = 305,825.57 × 131,004.26
  4. Step 4: Simplify right side
    221,692.16x = 40,064,450,302.78
  5. Step 5: Solve for x
    x = 40,064,450,302.78/221,692.16
  6. Step 6: Final answer
    x = 180,721.10

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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.