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Finding the Fourth Proportional to 218,355.68, 301,348.56 and 122,856.80

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Solution

The fourth proportional to 218,355.68, 301,348.56 and 122,856.80 is: 169,552.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,355.68 : 301,348.56 = 122,856.80 : x
  2. Step 2: Convert to fraction form
    218,355.68/301,348.56 = 122,856.80/x
  3. Step 3: Cross multiply
    218,355.68x = 301,348.56 × 122,856.80
  4. Step 4: Simplify right side
    218,355.68x = 37,022,719,766.21
  5. Step 5: Solve for x
    x = 37,022,719,766.21/218,355.68
  6. Step 6: Final answer
    x = 169,552.35

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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.