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Finding the Fourth Proportional to 215,402.58, 323,103.96 and 103,056.36

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Solution

The fourth proportional to 215,402.58, 323,103.96 and 103,056.36 is: 154,584.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,402.58 : 323,103.96 = 103,056.36 : x
  2. Step 2: Convert to fraction form
    215,402.58/323,103.96 = 103,056.36/x
  3. Step 3: Cross multiply
    215,402.58x = 323,103.96 × 103,056.36
  4. Step 4: Simplify right side
    215,402.58x = 33,297,918,019.19
  5. Step 5: Solve for x
    x = 33,297,918,019.19/215,402.58
  6. Step 6: Final answer
    x = 154,584.58

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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.