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Finding the Fourth Proportional to 281,140.20, 421,054.20 and 275,502.60

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Solution

The fourth proportional to 281,140.20, 421,054.20 and 275,502.60 is: 412,610.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,140.20 : 421,054.20 = 275,502.60 : x
  2. Step 2: Convert to fraction form
    281,140.20/421,054.20 = 275,502.60/x
  3. Step 3: Cross multiply
    281,140.20x = 421,054.20 × 275,502.60
  4. Step 4: Simplify right side
    281,140.20x = 116,001,526,840.92
  5. Step 5: Solve for x
    x = 116,001,526,840.92/281,140.20
  6. Step 6: Final answer
    x = 412,610.96

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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.