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Finding the Fourth Proportional to 281,000.44, 421,303.51 and 103,484.68

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Solution

The fourth proportional to 281,000.44, 421,303.51 and 103,484.68 is: 155,154.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,000.44 : 421,303.51 = 103,484.68 : x
  2. Step 2: Convert to fraction form
    281,000.44/421,303.51 = 103,484.68/x
  3. Step 3: Cross multiply
    281,000.44x = 421,303.51 × 103,484.68
  4. Step 4: Simplify right side
    281,000.44x = 43,598,458,915.23
  5. Step 5: Solve for x
    x = 43,598,458,915.23/281,000.44
  6. Step 6: Final answer
    x = 155,154.42

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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.