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Finding the Fourth Proportional to 305,201.31, 421,178.73 and 169,244.85

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Solution

The fourth proportional to 305,201.31, 421,178.73 and 169,244.85 is: 233,558.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,201.31 : 421,178.73 = 169,244.85 : x
  2. Step 2: Convert to fraction form
    305,201.31/421,178.73 = 169,244.85/x
  3. Step 3: Cross multiply
    305,201.31x = 421,178.73 × 169,244.85
  4. Step 4: Simplify right side
    305,201.31x = 71,282,330,982.04
  5. Step 5: Solve for x
    x = 71,282,330,982.04/305,201.31
  6. Step 6: Final answer
    x = 233,558.40

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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.