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Finding the Fourth Proportional to 221,154.84, 331,699.59 and 108,804.87

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Solution

The fourth proportional to 221,154.84, 331,699.59 and 108,804.87 is: 163,191.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,154.84 : 331,699.59 = 108,804.87 : x
  2. Step 2: Convert to fraction form
    221,154.84/331,699.59 = 108,804.87/x
  3. Step 3: Cross multiply
    221,154.84x = 331,699.59 × 108,804.87
  4. Step 4: Simplify right side
    221,154.84x = 36,090,530,769.00
  5. Step 5: Solve for x
    x = 36,090,530,769.00/221,154.84
  6. Step 6: Final answer
    x = 163,191.23

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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.