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Finding the Fourth Proportional to 272,928.60, 409,336.50 and 73,201.50

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Solution

The fourth proportional to 272,928.60, 409,336.50 and 73,201.50 is: 109,787.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,928.60 : 409,336.50 = 73,201.50 : x
  2. Step 2: Convert to fraction form
    272,928.60/409,336.50 = 73,201.50/x
  3. Step 3: Cross multiply
    272,928.60x = 409,336.50 × 73,201.50
  4. Step 4: Simplify right side
    272,928.60x = 29,964,045,804.75
  5. Step 5: Solve for x
    x = 29,964,045,804.75/272,928.60
  6. Step 6: Final answer
    x = 109,787.12

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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.