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Finding the Fourth Proportional to 299,488.70, 449,233.05 and 99,815.60

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Solution

The fourth proportional to 299,488.70, 449,233.05 and 99,815.60 is: 149,723.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,488.70 : 449,233.05 = 99,815.60 : x
  2. Step 2: Convert to fraction form
    299,488.70/449,233.05 = 99,815.60/x
  3. Step 3: Cross multiply
    299,488.70x = 449,233.05 × 99,815.60
  4. Step 4: Simplify right side
    299,488.70x = 44,840,466,425.58
  5. Step 5: Solve for x
    x = 44,840,466,425.58/299,488.70
  6. Step 6: Final answer
    x = 149,723.40

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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.