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Finding the Fourth Proportional to 299,990.40, 449,985.60 and 134,102.40

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Solution

The fourth proportional to 299,990.40, 449,985.60 and 134,102.40 is: 201,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,990.40 : 449,985.60 = 134,102.40 : x
  2. Step 2: Convert to fraction form
    299,990.40/449,985.60 = 134,102.40/x
  3. Step 3: Cross multiply
    299,990.40x = 449,985.60 × 134,102.40
  4. Step 4: Simplify right side
    299,990.40x = 60,344,148,925.44
  5. Step 5: Solve for x
    x = 60,344,148,925.44/299,990.40
  6. Step 6: Final answer
    x = 201,153.60

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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.