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Finding the Fourth Proportional to 281,122.66, 421,740.42 and 103,630.60

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Solution

The fourth proportional to 281,122.66, 421,740.42 and 103,630.60 is: 155,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,122.66 : 421,740.42 = 103,630.60 : x
  2. Step 2: Convert to fraction form
    281,122.66/421,740.42 = 103,630.60/x
  3. Step 3: Cross multiply
    281,122.66x = 421,740.42 × 103,630.60
  4. Step 4: Simplify right side
    281,122.66x = 43,705,212,768.85
  5. Step 5: Solve for x
    x = 43,705,212,768.85/281,122.66
  6. Step 6: Final answer
    x = 155,466.70

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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.