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Finding the Fourth Proportional to 281,134.80, 421,556.40 and 103,550.40

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Solution

The fourth proportional to 281,134.80, 421,556.40 and 103,550.40 is: 155,271.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,134.80 : 421,556.40 = 103,550.40 : x
  2. Step 2: Convert to fraction form
    281,134.80/421,556.40 = 103,550.40/x
  3. Step 3: Cross multiply
    281,134.80x = 421,556.40 × 103,550.40
  4. Step 4: Simplify right side
    281,134.80x = 43,652,333,842.56
  5. Step 5: Solve for x
    x = 43,652,333,842.56/281,134.80
  6. Step 6: Final answer
    x = 155,271.90

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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.