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Finding the Fourth Proportional to 305,244.50, 421,238.62 and 169,291.08

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Solution

The fourth proportional to 305,244.50, 421,238.62 and 169,291.08 is: 233,622.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,244.50 : 421,238.62 = 169,291.08 : x
  2. Step 2: Convert to fraction form
    305,244.50/421,238.62 = 169,291.08/x
  3. Step 3: Cross multiply
    305,244.50x = 421,238.62 × 169,291.08
  4. Step 4: Simplify right side
    305,244.50x = 71,311,940,917.51
  5. Step 5: Solve for x
    x = 71,311,940,917.51/305,244.50
  6. Step 6: Final answer
    x = 233,622.36

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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.