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Finding the Fourth Proportional to 216,279.84, 324,432.72 and 103,982.88

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Solution

The fourth proportional to 216,279.84, 324,432.72 and 103,982.88 is: 155,980.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,279.84 : 324,432.72 = 103,982.88 : x
  2. Step 2: Convert to fraction form
    216,279.84/324,432.72 = 103,982.88/x
  3. Step 3: Cross multiply
    216,279.84x = 324,432.72 × 103,982.88
  4. Step 4: Simplify right side
    216,279.84x = 33,735,448,591.83
  5. Step 5: Solve for x
    x = 33,735,448,591.83/216,279.84
  6. Step 6: Final answer
    x = 155,980.55

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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.