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Finding the Fourth Proportional to 315,212.03, 435,004.80 and 179,258.39

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Solution

The fourth proportional to 315,212.03, 435,004.80 and 179,258.39 is: 247,383.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,212.03 : 435,004.80 = 179,258.39 : x
  2. Step 2: Convert to fraction form
    315,212.03/435,004.80 = 179,258.39/x
  3. Step 3: Cross multiply
    315,212.03x = 435,004.80 × 179,258.39
  4. Step 4: Simplify right side
    315,212.03x = 77,978,260,090.27
  5. Step 5: Solve for x
    x = 77,978,260,090.27/315,212.03
  6. Step 6: Final answer
    x = 247,383.52

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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.