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Finding the Fourth Proportional to 250,978.20, 376,311.78 and 117,887.64

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Solution

The fourth proportional to 250,978.20, 376,311.78 and 117,887.64 is: 176,758.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,978.20 : 376,311.78 = 117,887.64 : x
  2. Step 2: Convert to fraction form
    250,978.20/376,311.78 = 117,887.64/x
  3. Step 3: Cross multiply
    250,978.20x = 376,311.78 × 117,887.64
  4. Step 4: Simplify right side
    250,978.20x = 44,362,507,648.40
  5. Step 5: Solve for x
    x = 44,362,507,648.40/250,978.20
  6. Step 6: Final answer
    x = 176,758.41

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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.