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Finding the Fourth Proportional to 358,684.40, 494,978.42 and 197,554.44

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Solution

The fourth proportional to 358,684.40, 494,978.42 and 197,554.44 is: 272,621.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,684.40 : 494,978.42 = 197,554.44 : x
  2. Step 2: Convert to fraction form
    358,684.40/494,978.42 = 197,554.44/x
  3. Step 3: Cross multiply
    358,684.40x = 494,978.42 × 197,554.44
  4. Step 4: Simplify right side
    358,684.40x = 97,785,183,587.41
  5. Step 5: Solve for x
    x = 97,785,183,587.41/358,684.40
  6. Step 6: Final answer
    x = 272,621.79

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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.