Home / 661,747.31-992,137.09-212,212.29

Finding the Fourth Proportional to 661,747.31, 992,137.09 and 212,212.29

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Solution

The fourth proportional to 661,747.31, 992,137.09 and 212,212.29 is: 318,163.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,747.31 : 992,137.09 = 212,212.29 : x
  2. Step 2: Convert to fraction form
    661,747.31/992,137.09 = 212,212.29/x
  3. Step 3: Cross multiply
    661,747.31x = 992,137.09 × 212,212.29
  4. Step 4: Simplify right side
    661,747.31x = 210,543,683,862.84
  5. Step 5: Solve for x
    x = 210,543,683,862.84/661,747.31
  6. Step 6: Final answer
    x = 318,163.26

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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.