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Finding the Fourth Proportional to 299,438.40, 449,485.65 and 187,245.30

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Solution

The fourth proportional to 299,438.40, 449,485.65 and 187,245.30 is: 281,073.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,438.40 : 449,485.65 = 187,245.30 : x
  2. Step 2: Convert to fraction form
    299,438.40/449,485.65 = 187,245.30/x
  3. Step 3: Cross multiply
    299,438.40x = 449,485.65 × 187,245.30
  4. Step 4: Simplify right side
    299,438.40x = 84,164,075,379.95
  5. Step 5: Solve for x
    x = 84,164,075,379.95/299,438.40
  6. Step 6: Final answer
    x = 281,073.09

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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.