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Finding the Fourth Proportional to 324,985.96, 487,127.67 and 135,395.47

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Solution

The fourth proportional to 324,985.96, 487,127.67 and 135,395.47 is: 202,946.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,985.96 : 487,127.67 = 135,395.47 : x
  2. Step 2: Convert to fraction form
    324,985.96/487,127.67 = 135,395.47/x
  3. Step 3: Cross multiply
    324,985.96x = 487,127.67 × 135,395.47
  4. Step 4: Simplify right side
    324,985.96x = 65,954,879,829.65
  5. Step 5: Solve for x
    x = 65,954,879,829.65/324,985.96
  6. Step 6: Final answer
    x = 202,946.86

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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.