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Finding the Fourth Proportional to 281,172.60, 421,292.28 and 197,891.64

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Solution

The fourth proportional to 281,172.60, 421,292.28 and 197,891.64 is: 296,509.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,172.60 : 421,292.28 = 197,891.64 : x
  2. Step 2: Convert to fraction form
    281,172.60/421,292.28 = 197,891.64/x
  3. Step 3: Cross multiply
    281,172.60x = 421,292.28 × 197,891.64
  4. Step 4: Simplify right side
    281,172.60x = 83,370,220,208.54
  5. Step 5: Solve for x
    x = 83,370,220,208.54/281,172.60
  6. Step 6: Final answer
    x = 296,509.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.