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Finding the Fourth Proportional to 289,122.72, 398,936.88 and 166,596

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Solution

The fourth proportional to 289,122.72, 398,936.88 and 166,596 is: 229,872.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,122.72 : 398,936.88 = 166,596 : x
  2. Step 2: Convert to fraction form
    289,122.72/398,936.88 = 166,596/x
  3. Step 3: Cross multiply
    289,122.72x = 398,936.88 × 166,596
  4. Step 4: Simplify right side
    289,122.72x = 66,461,288,460.48
  5. Step 5: Solve for x
    x = 66,461,288,460.48/289,122.72
  6. Step 6: Final answer
    x = 229,872.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.