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Finding the Fourth Proportional to 324,447.50, 486,671.25 and 102,831.50

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Solution

The fourth proportional to 324,447.50, 486,671.25 and 102,831.50 is: 154,247.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,447.50 : 486,671.25 = 102,831.50 : x
  2. Step 2: Convert to fraction form
    324,447.50/486,671.25 = 102,831.50/x
  3. Step 3: Cross multiply
    324,447.50x = 486,671.25 × 102,831.50
  4. Step 4: Simplify right side
    324,447.50x = 50,045,134,644.38
  5. Step 5: Solve for x
    x = 50,045,134,644.38/324,447.50
  6. Step 6: Final answer
    x = 154,247.25

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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.