Home / 820,142.45-1,230,277.91-221,094.44

Finding the Fourth Proportional to 820,142.45, 1,230,277.91 and 221,094.44

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Solution

The fourth proportional to 820,142.45, 1,230,277.91 and 221,094.44 is: 331,658.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,142.45 : 1,230,277.91 = 221,094.44 : x
  2. Step 2: Convert to fraction form
    820,142.45/1,230,277.91 = 221,094.44/x
  3. Step 3: Cross multiply
    820,142.45x = 1,230,277.91 × 221,094.44
  4. Step 4: Simplify right side
    820,142.45x = 272,007,598,298.96
  5. Step 5: Solve for x
    x = 272,007,598,298.96/820,142.45
  6. Step 6: Final answer
    x = 331,658.97

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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.