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Finding the Fourth Proportional to 304,908.93, 420,768.72 and 168,942.38

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Solution

The fourth proportional to 304,908.93, 420,768.72 and 168,942.38 is: 233,137.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,908.93 : 420,768.72 = 168,942.38 : x
  2. Step 2: Convert to fraction form
    304,908.93/420,768.72 = 168,942.38/x
  3. Step 3: Cross multiply
    304,908.93x = 420,768.72 × 168,942.38
  4. Step 4: Simplify right side
    304,908.93x = 71,085,666,882.51
  5. Step 5: Solve for x
    x = 71,085,666,882.51/304,908.93
  6. Step 6: Final answer
    x = 233,137.37

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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.