Home / 251,434.12-346,985.04-138,256.78

Finding the Fourth Proportional to 251,434.12, 346,985.04 and 138,256.78

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Solution

The fourth proportional to 251,434.12, 346,985.04 and 138,256.78 is: 190,797.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,434.12 : 346,985.04 = 138,256.78 : x
  2. Step 2: Convert to fraction form
    251,434.12/346,985.04 = 138,256.78/x
  3. Step 3: Cross multiply
    251,434.12x = 346,985.04 × 138,256.78
  4. Step 4: Simplify right side
    251,434.12x = 47,973,034,338.57
  5. Step 5: Solve for x
    x = 47,973,034,338.57/251,434.12
  6. Step 6: Final answer
    x = 190,797.63

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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.