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Finding the Fourth Proportional to 358,783.78, 495,099.30 and 197,629.78

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Solution

The fourth proportional to 358,783.78, 495,099.30 and 197,629.78 is: 272,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,783.78 : 495,099.30 = 197,629.78 : x
  2. Step 2: Convert to fraction form
    358,783.78/495,099.30 = 197,629.78/x
  3. Step 3: Cross multiply
    358,783.78x = 495,099.30 × 197,629.78
  4. Step 4: Simplify right side
    358,783.78x = 97,846,365,737.15
  5. Step 5: Solve for x
    x = 97,846,365,737.15/358,783.78
  6. Step 6: Final answer
    x = 272,716.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.