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Finding the Fourth Proportional to 305,570.94, 421,692.39 and 169,613.64

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Solution

The fourth proportional to 305,570.94, 421,692.39 and 169,613.64 is: 234,069.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,570.94 : 421,692.39 = 169,613.64 : x
  2. Step 2: Convert to fraction form
    305,570.94/421,692.39 = 169,613.64/x
  3. Step 3: Cross multiply
    305,570.94x = 421,692.39 × 169,613.64
  4. Step 4: Simplify right side
    305,570.94x = 71,524,781,228.20
  5. Step 5: Solve for x
    x = 71,524,781,228.20/305,570.94
  6. Step 6: Final answer
    x = 234,069.32

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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.