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Finding the Fourth Proportional to 304,621.56, 420,377.70 and 170,485.56

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Solution

The fourth proportional to 304,621.56, 420,377.70 and 170,485.56 is: 235,270.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,621.56 : 420,377.70 = 170,485.56 : x
  2. Step 2: Convert to fraction form
    304,621.56/420,377.70 = 170,485.56/x
  3. Step 3: Cross multiply
    304,621.56x = 420,377.70 × 170,485.56
  4. Step 4: Simplify right side
    304,621.56x = 71,668,327,596.01
  5. Step 5: Solve for x
    x = 71,668,327,596.01/304,621.56
  6. Step 6: Final answer
    x = 235,270.04

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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.