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Finding the Fourth Proportional to 312,087.36, 430,680.36 and 168,847.44

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Solution

The fourth proportional to 312,087.36, 430,680.36 and 168,847.44 is: 233,009.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,087.36 : 430,680.36 = 168,847.44 : x
  2. Step 2: Convert to fraction form
    312,087.36/430,680.36 = 168,847.44/x
  3. Step 3: Cross multiply
    312,087.36x = 430,680.36 × 168,847.44
  4. Step 4: Simplify right side
    312,087.36x = 72,719,276,244.28
  5. Step 5: Solve for x
    x = 72,719,276,244.28/312,087.36
  6. Step 6: Final answer
    x = 233,009.36

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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.