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Finding the Fourth Proportional to 304,991.08, 420,847.80 and 169,018.48

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Solution

The fourth proportional to 304,991.08, 420,847.80 and 169,018.48 is: 233,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,991.08 : 420,847.80 = 169,018.48 : x
  2. Step 2: Convert to fraction form
    304,991.08/420,847.80 = 169,018.48/x
  3. Step 3: Cross multiply
    304,991.08x = 420,847.80 × 169,018.48
  4. Step 4: Simplify right side
    304,991.08x = 71,131,055,467.34
  5. Step 5: Solve for x
    x = 71,131,055,467.34/304,991.08
  6. Step 6: Final answer
    x = 233,223.40

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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.