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Finding the Fourth Proportional to 251,281.20, 376,921.80 and 82,801.20

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Solution

The fourth proportional to 251,281.20, 376,921.80 and 82,801.20 is: 124,201.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,281.20 : 376,921.80 = 82,801.20 : x
  2. Step 2: Convert to fraction form
    251,281.20/376,921.80 = 82,801.20/x
  3. Step 3: Cross multiply
    251,281.20x = 376,921.80 × 82,801.20
  4. Step 4: Simplify right side
    251,281.20x = 31,209,577,346.16
  5. Step 5: Solve for x
    x = 31,209,577,346.16/251,281.20
  6. Step 6: Final answer
    x = 124,201.80

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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.