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Finding the Fourth Proportional to 217,276.20, 325,817.10 and 98,886.60

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Solution

The fourth proportional to 217,276.20, 325,817.10 and 98,886.60 is: 148,285.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,276.20 : 325,817.10 = 98,886.60 : x
  2. Step 2: Convert to fraction form
    217,276.20/325,817.10 = 98,886.60/x
  3. Step 3: Cross multiply
    217,276.20x = 325,817.10 × 98,886.60
  4. Step 4: Simplify right side
    217,276.20x = 32,218,945,240.86
  5. Step 5: Solve for x
    x = 32,218,945,240.86/217,276.20
  6. Step 6: Final answer
    x = 148,285.66

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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.