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Finding the Fourth Proportional to 216,834.53, 325,076.50 and 90,571.50

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Solution

The fourth proportional to 216,834.53, 325,076.50 and 90,571.50 is: 135,784.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,834.53 : 325,076.50 = 90,571.50 : x
  2. Step 2: Convert to fraction form
    216,834.53/325,076.50 = 90,571.50/x
  3. Step 3: Cross multiply
    216,834.53x = 325,076.50 × 90,571.50
  4. Step 4: Simplify right side
    216,834.53x = 29,442,666,219.75
  5. Step 5: Solve for x
    x = 29,442,666,219.75/216,834.53
  6. Step 6: Final answer
    x = 135,784.03

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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.