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Finding the Fourth Proportional to 299,700.12, 449,771.40 and 141,928.32

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Solution

The fourth proportional to 299,700.12, 449,771.40 and 141,928.32 is: 212,997.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,700.12 : 449,771.40 = 141,928.32 : x
  2. Step 2: Convert to fraction form
    299,700.12/449,771.40 = 141,928.32/x
  3. Step 3: Cross multiply
    299,700.12x = 449,771.40 × 141,928.32
  4. Step 4: Simplify right side
    299,700.12x = 63,835,299,186.05
  5. Step 5: Solve for x
    x = 63,835,299,186.05/299,700.12
  6. Step 6: Final answer
    x = 212,997.24

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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.