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Finding the Fourth Proportional to 325,456.76, 488,263.07 and 135,811.63

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Solution

The fourth proportional to 325,456.76, 488,263.07 and 135,811.63 is: 203,749.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,456.76 : 488,263.07 = 135,811.63 : x
  2. Step 2: Convert to fraction form
    325,456.76/488,263.07 = 135,811.63/x
  3. Step 3: Cross multiply
    325,456.76x = 488,263.07 × 135,811.63
  4. Step 4: Simplify right side
    325,456.76x = 66,311,804,355.36
  5. Step 5: Solve for x
    x = 66,311,804,355.36/325,456.76
  6. Step 6: Final answer
    x = 203,749.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.