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Finding the Fourth Proportional to 312,201.54, 430,838.04 and 168,961.56

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Solution

The fourth proportional to 312,201.54, 430,838.04 and 168,961.56 is: 233,166.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,201.54 : 430,838.04 = 168,961.56 : x
  2. Step 2: Convert to fraction form
    312,201.54/430,838.04 = 168,961.56/x
  3. Step 3: Cross multiply
    312,201.54x = 430,838.04 × 168,961.56
  4. Step 4: Simplify right side
    312,201.54x = 72,795,067,345.74
  5. Step 5: Solve for x
    x = 72,795,067,345.74/312,201.54
  6. Step 6: Final answer
    x = 233,166.91

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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.