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Finding the Fourth Proportional to 216,425.61, 324,197.42 and 103,762.35

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Solution

The fourth proportional to 216,425.61, 324,197.42 and 103,762.35 is: 155,432.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,425.61 : 324,197.42 = 103,762.35 : x
  2. Step 2: Convert to fraction form
    216,425.61/324,197.42 = 103,762.35/x
  3. Step 3: Cross multiply
    216,425.61x = 324,197.42 × 103,762.35
  4. Step 4: Simplify right side
    216,425.61x = 33,639,485,644.33
  5. Step 5: Solve for x
    x = 33,639,485,644.33/216,425.61
  6. Step 6: Final answer
    x = 155,432.09

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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.