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Finding the Fourth Proportional to 438,940.72, 658,454.94 and 119,097.68

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Solution

The fourth proportional to 438,940.72, 658,454.94 and 119,097.68 is: 178,658.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,940.72 : 658,454.94 = 119,097.68 : x
  2. Step 2: Convert to fraction form
    438,940.72/658,454.94 = 119,097.68/x
  3. Step 3: Cross multiply
    438,940.72x = 658,454.94 × 119,097.68
  4. Step 4: Simplify right side
    438,940.72x = 78,420,452,446.26
  5. Step 5: Solve for x
    x = 78,420,452,446.26/438,940.72
  6. Step 6: Final answer
    x = 178,658.41

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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.