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Finding the Fourth Proportional to 358,321.86, 494,485.92 and 197,172.90

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Solution

The fourth proportional to 358,321.86, 494,485.92 and 197,172.90 is: 272,099.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,321.86 : 494,485.92 = 197,172.90 : x
  2. Step 2: Convert to fraction form
    358,321.86/494,485.92 = 197,172.90/x
  3. Step 3: Cross multiply
    358,321.86x = 494,485.92 × 197,172.90
  4. Step 4: Simplify right side
    358,321.86x = 97,499,222,855.57
  5. Step 5: Solve for x
    x = 97,499,222,855.57/358,321.86
  6. Step 6: Final answer
    x = 272,099.57

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1.5x scale

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.