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Finding the Fourth Proportional to 251,242.88, 346,715.17 and 138,065.63

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Solution

The fourth proportional to 251,242.88, 346,715.17 and 138,065.63 is: 190,530.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,242.88 : 346,715.17 = 138,065.63 : x
  2. Step 2: Convert to fraction form
    251,242.88/346,715.17 = 138,065.63/x
  3. Step 3: Cross multiply
    251,242.88x = 346,715.17 × 138,065.63
  4. Step 4: Simplify right side
    251,242.88x = 47,869,446,297.87
  5. Step 5: Solve for x
    x = 47,869,446,297.87/251,242.88
  6. Step 6: Final answer
    x = 190,530.56

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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.