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Finding the Fourth Proportional to 353,887.60, 530,831.40 and 269,906.80

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Solution

The fourth proportional to 353,887.60, 530,831.40 and 269,906.80 is: 404,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,887.60 : 530,831.40 = 269,906.80 : x
  2. Step 2: Convert to fraction form
    353,887.60/530,831.40 = 269,906.80/x
  3. Step 3: Cross multiply
    353,887.60x = 530,831.40 × 269,906.80
  4. Step 4: Simplify right side
    353,887.60x = 143,275,004,513.52
  5. Step 5: Solve for x
    x = 143,275,004,513.52/353,887.60
  6. Step 6: Final answer
    x = 404,860.20

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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.