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Finding the Fourth Proportional to 218,659.82, 328,035.75 and 123,935.39

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Solution

The fourth proportional to 218,659.82, 328,035.75 and 123,935.39 is: 185,929.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,659.82 : 328,035.75 = 123,935.39 : x
  2. Step 2: Convert to fraction form
    218,659.82/328,035.75 = 123,935.39/x
  3. Step 3: Cross multiply
    218,659.82x = 328,035.75 × 123,935.39
  4. Step 4: Simplify right side
    218,659.82x = 40,655,236,970.01
  5. Step 5: Solve for x
    x = 40,655,236,970.01/218,659.82
  6. Step 6: Final answer
    x = 185,929.17

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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.