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Finding the Fourth Proportional to 305,044.46, 420,986.58 and 169,121.06

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Solution

The fourth proportional to 305,044.46, 420,986.58 and 169,121.06 is: 233,401.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,044.46 : 420,986.58 = 169,121.06 : x
  2. Step 2: Convert to fraction form
    305,044.46/420,986.58 = 169,121.06/x
  3. Step 3: Cross multiply
    305,044.46x = 420,986.58 × 169,121.06
  4. Step 4: Simplify right side
    305,044.46x = 71,197,696,655.37
  5. Step 5: Solve for x
    x = 71,197,696,655.37/305,044.46
  6. Step 6: Final answer
    x = 233,401.05

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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.