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Finding the Fourth Proportional to 251,346.90, 346,849.92 and 138,168.84

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Solution

The fourth proportional to 251,346.90, 346,849.92 and 138,168.84 is: 190,668.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,346.90 : 346,849.92 = 138,168.84 : x
  2. Step 2: Convert to fraction form
    251,346.90/346,849.92 = 138,168.84/x
  3. Step 3: Cross multiply
    251,346.90x = 346,849.92 × 138,168.84
  4. Step 4: Simplify right side
    251,346.90x = 47,923,851,100.49
  5. Step 5: Solve for x
    x = 47,923,851,100.49/251,346.90
  6. Step 6: Final answer
    x = 190,668.16

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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.