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Finding the Fourth Proportional to 220,088.70, 330,154.92 and 79,858.26

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Solution

The fourth proportional to 220,088.70, 330,154.92 and 79,858.26 is: 119,795.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,088.70 : 330,154.92 = 79,858.26 : x
  2. Step 2: Convert to fraction form
    220,088.70/330,154.92 = 79,858.26/x
  3. Step 3: Cross multiply
    220,088.70x = 330,154.92 × 79,858.26
  4. Step 4: Simplify right side
    220,088.70x = 26,365,597,441.64
  5. Step 5: Solve for x
    x = 26,365,597,441.64/220,088.70
  6. Step 6: Final answer
    x = 119,795.33

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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.