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Finding the Fourth Proportional to 218,637.20, 327,955.80 and 70,893.20

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Solution

The fourth proportional to 218,637.20, 327,955.80 and 70,893.20 is: 106,339.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,637.20 : 327,955.80 = 70,893.20 : x
  2. Step 2: Convert to fraction form
    218,637.20/327,955.80 = 70,893.20/x
  3. Step 3: Cross multiply
    218,637.20x = 327,955.80 × 70,893.20
  4. Step 4: Simplify right side
    218,637.20x = 23,249,836,120.56
  5. Step 5: Solve for x
    x = 23,249,836,120.56/218,637.20
  6. Step 6: Final answer
    x = 106,339.80

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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.