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Finding the Fourth Proportional to 281,491.47, 422,189.62 and 79,041.15

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Solution

The fourth proportional to 281,491.47, 422,189.62 and 79,041.15 is: 118,548.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,491.47 : 422,189.62 = 79,041.15 : x
  2. Step 2: Convert to fraction form
    281,491.47/422,189.62 = 79,041.15/x
  3. Step 3: Cross multiply
    281,491.47x = 422,189.62 × 79,041.15
  4. Step 4: Simplify right side
    281,491.47x = 33,370,352,885.26
  5. Step 5: Solve for x
    x = 33,370,352,885.26/281,491.47
  6. Step 6: Final answer
    x = 118,548.36

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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.