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Finding the Fourth Proportional to 193,276.80, 289,915.20 and 51,121.80

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Solution

The fourth proportional to 193,276.80, 289,915.20 and 51,121.80 is: 76,682.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,276.80 : 289,915.20 = 51,121.80 : x
  2. Step 2: Convert to fraction form
    193,276.80/289,915.20 = 51,121.80/x
  3. Step 3: Cross multiply
    193,276.80x = 289,915.20 × 51,121.80
  4. Step 4: Simplify right side
    193,276.80x = 14,820,986,871.36
  5. Step 5: Solve for x
    x = 14,820,986,871.36/193,276.80
  6. Step 6: Final answer
    x = 76,682.70

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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.