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Finding the Fourth Proportional to 453,137.36, 679,706.01 and 215,760.38

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Solution

The fourth proportional to 453,137.36, 679,706.01 and 215,760.38 is: 323,640.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,137.36 : 679,706.01 = 215,760.38 : x
  2. Step 2: Convert to fraction form
    453,137.36/679,706.01 = 215,760.38/x
  3. Step 3: Cross multiply
    453,137.36x = 679,706.01 × 215,760.38
  4. Step 4: Simplify right side
    453,137.36x = 146,653,628,735.55
  5. Step 5: Solve for x
    x = 146,653,628,735.55/453,137.36
  6. Step 6: Final answer
    x = 323,640.56

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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.