Home / 251,432.12-346,982.28-138,254.78

Finding the Fourth Proportional to 251,432.12, 346,982.28 and 138,254.78

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Solution

The fourth proportional to 251,432.12, 346,982.28 and 138,254.78 is: 190,794.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,432.12 : 346,982.28 = 138,254.78 : x
  2. Step 2: Convert to fraction form
    251,432.12/346,982.28 = 138,254.78/x
  3. Step 3: Cross multiply
    251,432.12x = 346,982.28 × 138,254.78
  4. Step 4: Simplify right side
    251,432.12x = 47,971,958,785.30
  5. Step 5: Solve for x
    x = 47,971,958,785.30/251,432.12
  6. Step 6: Final answer
    x = 190,794.87

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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.