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Finding the Fourth Proportional to 218,799.45, 328,199.19 and 69,051.39

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Solution

The fourth proportional to 218,799.45, 328,199.19 and 69,051.39 is: 103,577.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,799.45 : 328,199.19 = 69,051.39 : x
  2. Step 2: Convert to fraction form
    218,799.45/328,199.19 = 69,051.39/x
  3. Step 3: Cross multiply
    218,799.45x = 328,199.19 × 69,051.39
  4. Step 4: Simplify right side
    218,799.45x = 22,662,610,266.37
  5. Step 5: Solve for x
    x = 22,662,610,266.37/218,799.45
  6. Step 6: Final answer
    x = 103,577.09

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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.