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Finding the Fourth Proportional to 299,785.60, 449,900.10 and 142,014.40

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Solution

The fourth proportional to 299,785.60, 449,900.10 and 142,014.40 is: 213,126.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,785.60 : 449,900.10 = 142,014.40 : x
  2. Step 2: Convert to fraction form
    299,785.60/449,900.10 = 142,014.40/x
  3. Step 3: Cross multiply
    299,785.60x = 449,900.10 × 142,014.40
  4. Step 4: Simplify right side
    299,785.60x = 63,892,292,761.44
  5. Step 5: Solve for x
    x = 63,892,292,761.44/299,785.60
  6. Step 6: Final answer
    x = 213,126.62

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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.