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Finding the Fourth Proportional to 305,241.01, 421,254.27 and 169,287.98

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Solution

The fourth proportional to 305,241.01, 421,254.27 and 169,287.98 is: 233,629.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,241.01 : 421,254.27 = 169,287.98 : x
  2. Step 2: Convert to fraction form
    305,241.01/421,254.27 = 169,287.98/x
  3. Step 3: Cross multiply
    305,241.01x = 421,254.27 × 169,287.98
  4. Step 4: Simplify right side
    305,241.01x = 71,313,282,328.40
  5. Step 5: Solve for x
    x = 71,313,282,328.40/305,241.01
  6. Step 6: Final answer
    x = 233,629.43

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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.