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Finding the Fourth Proportional to 299,115.09, 448,575.59 and 99,381.85

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Solution

The fourth proportional to 299,115.09, 448,575.59 and 99,381.85 is: 149,040.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,115.09 : 448,575.59 = 99,381.85 : x
  2. Step 2: Convert to fraction form
    299,115.09/448,575.59 = 99,381.85/x
  3. Step 3: Cross multiply
    299,115.09x = 448,575.59 × 99,381.85
  4. Step 4: Simplify right side
    299,115.09x = 44,580,271,999.04
  5. Step 5: Solve for x
    x = 44,580,271,999.04/299,115.09
  6. Step 6: Final answer
    x = 149,040.53

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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.