Home / 305,749.73-421,937.58-178,400.72

Finding the Fourth Proportional to 305,749.73, 421,937.58 and 178,400.72

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Solution

The fourth proportional to 305,749.73, 421,937.58 and 178,400.72 is: 246,194.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,749.73 : 421,937.58 = 178,400.72 : x
  2. Step 2: Convert to fraction form
    305,749.73/421,937.58 = 178,400.72/x
  3. Step 3: Cross multiply
    305,749.73x = 421,937.58 × 178,400.72
  4. Step 4: Simplify right side
    305,749.73x = 75,273,969,121.90
  5. Step 5: Solve for x
    x = 75,273,969,121.90/305,749.73
  6. Step 6: Final answer
    x = 246,194.72

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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.