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Finding the Fourth Proportional to 312,336.73, 468,697.81 and 122,763.79

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Solution

The fourth proportional to 312,336.73, 468,697.81 and 122,763.79 is: 184,221.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,336.73 : 468,697.81 = 122,763.79 : x
  2. Step 2: Convert to fraction form
    312,336.73/468,697.81 = 122,763.79/x
  3. Step 3: Cross multiply
    312,336.73x = 468,697.81 × 122,763.79
  4. Step 4: Simplify right side
    312,336.73x = 57,539,117,176.81
  5. Step 5: Solve for x
    x = 57,539,117,176.81/312,336.73
  6. Step 6: Final answer
    x = 184,221.43

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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.