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Finding the Fourth Proportional to 305,258.63, 421,256.90 and 169,313.39

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Solution

The fourth proportional to 305,258.63, 421,256.90 and 169,313.39 is: 233,652.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,258.63 : 421,256.90 = 169,313.39 : x
  2. Step 2: Convert to fraction form
    305,258.63/421,256.90 = 169,313.39/x
  3. Step 3: Cross multiply
    305,258.63x = 421,256.90 × 169,313.39
  4. Step 4: Simplify right side
    305,258.63x = 71,324,433,696.60
  5. Step 5: Solve for x
    x = 71,324,433,696.60/305,258.63
  6. Step 6: Final answer
    x = 233,652.48

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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.