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Finding the Fourth Proportional to 299,442.40, 449,163.60 and 141,978.40

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Solution

The fourth proportional to 299,442.40, 449,163.60 and 141,978.40 is: 212,967.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,442.40 : 449,163.60 = 141,978.40 : x
  2. Step 2: Convert to fraction form
    299,442.40/449,163.60 = 141,978.40/x
  3. Step 3: Cross multiply
    299,442.40x = 449,163.60 × 141,978.40
  4. Step 4: Simplify right side
    299,442.40x = 63,771,529,266.24
  5. Step 5: Solve for x
    x = 63,771,529,266.24/299,442.40
  6. Step 6: Final answer
    x = 212,967.60

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1.5x scale

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.