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Finding the Fourth Proportional to 299,093.40, 448,542.90 and 99,379.80

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Solution

The fourth proportional to 299,093.40, 448,542.90 and 99,379.80 is: 149,037.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,093.40 : 448,542.90 = 99,379.80 : x
  2. Step 2: Convert to fraction form
    299,093.40/448,542.90 = 99,379.80/x
  3. Step 3: Cross multiply
    299,093.40x = 448,542.90 × 99,379.80
  4. Step 4: Simplify right side
    299,093.40x = 44,576,103,693.42
  5. Step 5: Solve for x
    x = 44,576,103,693.42/299,093.40
  6. Step 6: Final answer
    x = 149,037.40

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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.