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Finding the Fourth Proportional to 303,684.40, 455,656.20 and 145,831.60

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Solution

The fourth proportional to 303,684.40, 455,656.20 and 145,831.60 is: 218,809.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,684.40 : 455,656.20 = 145,831.60 : x
  2. Step 2: Convert to fraction form
    303,684.40/455,656.20 = 145,831.60/x
  3. Step 3: Cross multiply
    303,684.40x = 455,656.20 × 145,831.60
  4. Step 4: Simplify right side
    303,684.40x = 66,449,072,695.92
  5. Step 5: Solve for x
    x = 66,449,072,695.92/303,684.40
  6. Step 6: Final answer
    x = 218,809.63

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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.