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Finding the Fourth Proportional to 304,825.45, 420,654.57 and 168,858.98

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Solution

The fourth proportional to 304,825.45, 420,654.57 and 168,858.98 is: 233,022.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,825.45 : 420,654.57 = 168,858.98 : x
  2. Step 2: Convert to fraction form
    304,825.45/420,654.57 = 168,858.98/x
  3. Step 3: Cross multiply
    304,825.45x = 420,654.57 × 168,858.98
  4. Step 4: Simplify right side
    304,825.45x = 71,031,301,622.54
  5. Step 5: Solve for x
    x = 71,031,301,622.54/304,825.45
  6. Step 6: Final answer
    x = 233,022.87

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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.