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Finding the Fourth Proportional to 215,903.89, 324,136.47 and 166,019.02

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Solution

The fourth proportional to 215,903.89, 324,136.47 and 166,019.02 is: 249,244.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,903.89 : 324,136.47 = 166,019.02 : x
  2. Step 2: Convert to fraction form
    215,903.89/324,136.47 = 166,019.02/x
  3. Step 3: Cross multiply
    215,903.89x = 324,136.47 × 166,019.02
  4. Step 4: Simplify right side
    215,903.89x = 53,812,816,644.88
  5. Step 5: Solve for x
    x = 53,812,816,644.88/215,903.89
  6. Step 6: Final answer
    x = 249,244.31

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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.