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Finding the Fourth Proportional to 251,186.20, 376,779.30 and 84,974.20

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Solution

The fourth proportional to 251,186.20, 376,779.30 and 84,974.20 is: 127,461.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,186.20 : 376,779.30 = 84,974.20 : x
  2. Step 2: Convert to fraction form
    251,186.20/376,779.30 = 84,974.20/x
  3. Step 3: Cross multiply
    251,186.20x = 376,779.30 × 84,974.20
  4. Step 4: Simplify right side
    251,186.20x = 32,016,519,594.06
  5. Step 5: Solve for x
    x = 32,016,519,594.06/251,186.20
  6. Step 6: Final answer
    x = 127,461.30

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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.