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Finding the Fourth Proportional to 251,146.40, 376,719.60 and 144,858.20

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Solution

The fourth proportional to 251,146.40, 376,719.60 and 144,858.20 is: 217,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,146.40 : 376,719.60 = 144,858.20 : x
  2. Step 2: Convert to fraction form
    251,146.40/376,719.60 = 144,858.20/x
  3. Step 3: Cross multiply
    251,146.40x = 376,719.60 × 144,858.20
  4. Step 4: Simplify right side
    251,146.40x = 54,570,923,160.72
  5. Step 5: Solve for x
    x = 54,570,923,160.72/251,146.40
  6. Step 6: Final answer
    x = 217,287.30

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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.