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Finding the Fourth Proportional to 251,129.20, 377,308.20 and 188,921.20

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Solution

The fourth proportional to 251,129.20, 377,308.20 and 188,921.20 is: 283,844.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,129.20 : 377,308.20 = 188,921.20 : x
  2. Step 2: Convert to fraction form
    251,129.20/377,308.20 = 188,921.20/x
  3. Step 3: Cross multiply
    251,129.20x = 377,308.20 × 188,921.20
  4. Step 4: Simplify right side
    251,129.20x = 71,281,517,913.84
  5. Step 5: Solve for x
    x = 71,281,517,913.84/251,129.20
  6. Step 6: Final answer
    x = 283,844.01

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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.