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Finding the Fourth Proportional to 199,672.64, 299,349.60 and 115,336.64

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Solution

The fourth proportional to 199,672.64, 299,349.60 and 115,336.64 is: 172,912.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,672.64 : 299,349.60 = 115,336.64 : x
  2. Step 2: Convert to fraction form
    199,672.64/299,349.60 = 115,336.64/x
  3. Step 3: Cross multiply
    199,672.64x = 299,349.60 × 115,336.64
  4. Step 4: Simplify right side
    199,672.64x = 34,525,977,049.34
  5. Step 5: Solve for x
    x = 34,525,977,049.34/199,672.64
  6. Step 6: Final answer
    x = 172,912.91

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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.