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Finding the Fourth Proportional to 325,321.65, 487,271.77 and 135,205.61

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Solution

The fourth proportional to 325,321.65, 487,271.77 and 135,205.61 is: 202,513.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,321.65 : 487,271.77 = 135,205.61 : x
  2. Step 2: Convert to fraction form
    325,321.65/487,271.77 = 135,205.61/x
  3. Step 3: Cross multiply
    325,321.65x = 487,271.77 × 135,205.61
  4. Step 4: Simplify right side
    325,321.65x = 65,881,874,124.26
  5. Step 5: Solve for x
    x = 65,881,874,124.26/325,321.65
  6. Step 6: Final answer
    x = 202,513.03

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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.