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Finding the Fourth Proportional to 281,114.84, 421,728.60 and 103,622.60

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Solution

The fourth proportional to 281,114.84, 421,728.60 and 103,622.60 is: 155,454.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,114.84 : 421,728.60 = 103,622.60 : x
  2. Step 2: Convert to fraction form
    281,114.84/421,728.60 = 103,622.60/x
  3. Step 3: Cross multiply
    281,114.84x = 421,728.60 × 103,622.60
  4. Step 4: Simplify right side
    281,114.84x = 43,700,614,026.36
  5. Step 5: Solve for x
    x = 43,700,614,026.36/281,114.84
  6. Step 6: Final answer
    x = 155,454.67

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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.