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Finding the Fourth Proportional to 299,997.40, 449,477.70 and 194,762.20

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Solution

The fourth proportional to 299,997.40, 449,477.70 and 194,762.20 is: 291,806.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,997.40 : 449,477.70 = 194,762.20 : x
  2. Step 2: Convert to fraction form
    299,997.40/449,477.70 = 194,762.20/x
  3. Step 3: Cross multiply
    299,997.40x = 449,477.70 × 194,762.20
  4. Step 4: Simplify right side
    299,997.40x = 87,541,265,702.94
  5. Step 5: Solve for x
    x = 87,541,265,702.94/299,997.40
  6. Step 6: Final answer
    x = 291,806.75

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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.