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Finding the Fourth Proportional to 220,287.15, 329,715.81 and 118,944.30

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Solution

The fourth proportional to 220,287.15, 329,715.81 and 118,944.30 is: 178,030.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,287.15 : 329,715.81 = 118,944.30 : x
  2. Step 2: Convert to fraction form
    220,287.15/329,715.81 = 118,944.30/x
  3. Step 3: Cross multiply
    220,287.15x = 329,715.81 × 118,944.30
  4. Step 4: Simplify right side
    220,287.15x = 39,217,816,219.38
  5. Step 5: Solve for x
    x = 39,217,816,219.38/220,287.15
  6. Step 6: Final answer
    x = 178,030.43

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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.