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Finding the Fourth Proportional to 251,282.10, 346,765.41 and 138,102.42

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Solution

The fourth proportional to 251,282.10, 346,765.41 and 138,102.42 is: 190,579.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,282.10 : 346,765.41 = 138,102.42 : x
  2. Step 2: Convert to fraction form
    251,282.10/346,765.41 = 138,102.42/x
  3. Step 3: Cross multiply
    251,282.10x = 346,765.41 × 138,102.42
  4. Step 4: Simplify right side
    251,282.10x = 47,889,142,293.29
  5. Step 5: Solve for x
    x = 47,889,142,293.29/251,282.10
  6. Step 6: Final answer
    x = 190,579.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.