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Finding the Fourth Proportional to 221,051.58, 331,624.62 and 71,300.40

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Solution

The fourth proportional to 221,051.58, 331,624.62 and 71,300.40 is: 106,965.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,051.58 : 331,624.62 = 71,300.40 : x
  2. Step 2: Convert to fraction form
    221,051.58/331,624.62 = 71,300.40/x
  3. Step 3: Cross multiply
    221,051.58x = 331,624.62 × 71,300.40
  4. Step 4: Simplify right side
    221,051.58x = 23,644,968,055.85
  5. Step 5: Solve for x
    x = 23,644,968,055.85/221,051.58
  6. Step 6: Final answer
    x = 106,965.84

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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.