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Finding the Fourth Proportional to 221,692.62, 305,826.22 and 131,004.72

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Solution

The fourth proportional to 221,692.62, 305,826.22 and 131,004.72 is: 180,721.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,692.62 : 305,826.22 = 131,004.72 : x
  2. Step 2: Convert to fraction form
    221,692.62/305,826.22 = 131,004.72/x
  3. Step 3: Cross multiply
    221,692.62x = 305,826.22 × 131,004.72
  4. Step 4: Simplify right side
    221,692.62x = 40,064,677,746.61
  5. Step 5: Solve for x
    x = 40,064,677,746.61/221,692.62
  6. Step 6: Final answer
    x = 180,721.74

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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.