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Finding the Fourth Proportional to 306,408.01, 422,868.60 and 170,467.57

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Solution

The fourth proportional to 306,408.01, 422,868.60 and 170,467.57 is: 235,259.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,408.01 : 422,868.60 = 170,467.57 : x
  2. Step 2: Convert to fraction form
    306,408.01/422,868.60 = 170,467.57/x
  3. Step 3: Cross multiply
    306,408.01x = 422,868.60 × 170,467.57
  4. Step 4: Simplify right side
    306,408.01x = 72,085,382,671.30
  5. Step 5: Solve for x
    x = 72,085,382,671.30/306,408.01
  6. Step 6: Final answer
    x = 235,259.46

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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.