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Finding the Fourth Proportional to 251,474.56, 377,289.77 and 87,171.02

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Solution

The fourth proportional to 251,474.56, 377,289.77 and 87,171.02 is: 130,783.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,474.56 : 377,289.77 = 87,171.02 : x
  2. Step 2: Convert to fraction form
    251,474.56/377,289.77 = 87,171.02/x
  3. Step 3: Cross multiply
    251,474.56x = 377,289.77 × 87,171.02
  4. Step 4: Simplify right side
    251,474.56x = 32,888,733,179.00
  5. Step 5: Solve for x
    x = 32,888,733,179.00/251,474.56
  6. Step 6: Final answer
    x = 130,783.54

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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.