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Finding the Fourth Proportional to 304,786.44, 420,810.80 and 190,239.57

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Solution

The fourth proportional to 304,786.44, 420,810.80 and 190,239.57 is: 262,658.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,786.44 : 420,810.80 = 190,239.57 : x
  2. Step 2: Convert to fraction form
    304,786.44/420,810.80 = 190,239.57/x
  3. Step 3: Cross multiply
    304,786.44x = 420,810.80 × 190,239.57
  4. Step 4: Simplify right side
    304,786.44x = 80,054,864,692.16
  5. Step 5: Solve for x
    x = 80,054,864,692.16/304,786.44
  6. Step 6: Final answer
    x = 262,658.88

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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.