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Finding the Fourth Proportional to 218,298.60, 301,251.60 and 122,805.36

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Solution

The fourth proportional to 218,298.60, 301,251.60 and 122,805.36 is: 169,471.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,298.60 : 301,251.60 = 122,805.36 : x
  2. Step 2: Convert to fraction form
    218,298.60/301,251.60 = 122,805.36/x
  3. Step 3: Cross multiply
    218,298.60x = 301,251.60 × 122,805.36
  4. Step 4: Simplify right side
    218,298.60x = 36,995,311,188.58
  5. Step 5: Solve for x
    x = 36,995,311,188.58/218,298.60
  6. Step 6: Final answer
    x = 169,471.13

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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.