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Finding the Fourth Proportional to 219,415.42, 329,106.72 and 79,174.05

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Solution

The fourth proportional to 219,415.42, 329,106.72 and 79,174.05 is: 118,755.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,415.42 : 329,106.72 = 79,174.05 : x
  2. Step 2: Convert to fraction form
    219,415.42/329,106.72 = 79,174.05/x
  3. Step 3: Cross multiply
    219,415.42x = 329,106.72 × 79,174.05
  4. Step 4: Simplify right side
    219,415.42x = 26,056,711,904.62
  5. Step 5: Solve for x
    x = 26,056,711,904.62/219,415.42
  6. Step 6: Final answer
    x = 118,755.15

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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.