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Finding the Fourth Proportional to 218,803.92, 301,945.20 and 123,308.70

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Solution

The fourth proportional to 218,803.92, 301,945.20 and 123,308.70 is: 170,163.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,803.92 : 301,945.20 = 123,308.70 : x
  2. Step 2: Convert to fraction form
    218,803.92/301,945.20 = 123,308.70/x
  3. Step 3: Cross multiply
    218,803.92x = 301,945.20 × 123,308.70
  4. Step 4: Simplify right side
    218,803.92x = 37,232,470,083.24
  5. Step 5: Solve for x
    x = 37,232,470,083.24/218,803.92
  6. Step 6: Final answer
    x = 170,163.63

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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.