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Finding the Fourth Proportional to 207,567.56, 311,395.08 and 67,315.25

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Solution

The fourth proportional to 207,567.56, 311,395.08 and 67,315.25 is: 100,987.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,567.56 : 311,395.08 = 67,315.25 : x
  2. Step 2: Convert to fraction form
    207,567.56/311,395.08 = 67,315.25/x
  3. Step 3: Cross multiply
    207,567.56x = 311,395.08 × 67,315.25
  4. Step 4: Simplify right side
    207,567.56x = 20,961,637,658.97
  5. Step 5: Solve for x
    x = 20,961,637,658.97/207,567.56
  6. Step 6: Final answer
    x = 100,987.06

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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.