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Finding the Fourth Proportional to 305,186.79, 421,201.17 and 169,250.97

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Solution

The fourth proportional to 305,186.79, 421,201.17 and 169,250.97 is: 233,590.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,186.79 : 421,201.17 = 169,250.97 : x
  2. Step 2: Convert to fraction form
    305,186.79/421,201.17 = 169,250.97/x
  3. Step 3: Cross multiply
    305,186.79x = 421,201.17 × 169,250.97
  4. Step 4: Simplify right side
    305,186.79x = 71,288,706,587.63
  5. Step 5: Solve for x
    x = 71,288,706,587.63/305,186.79
  6. Step 6: Final answer
    x = 233,590.41

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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.