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Finding the Fourth Proportional to 312,216.73, 430,858.34 and 168,976.87

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Solution

The fourth proportional to 312,216.73, 430,858.34 and 168,976.87 is: 233,187.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,216.73 : 430,858.34 = 168,976.87 : x
  2. Step 2: Convert to fraction form
    312,216.73/430,858.34 = 168,976.87/x
  3. Step 3: Cross multiply
    312,216.73x = 430,858.34 × 168,976.87
  4. Step 4: Simplify right side
    312,216.73x = 72,805,092,418.23
  5. Step 5: Solve for x
    x = 72,805,092,418.23/312,216.73
  6. Step 6: Final answer
    x = 233,187.67

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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.