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Finding the Fourth Proportional to 251,215.84, 346,677.78 and 138,045.88

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Solution

The fourth proportional to 251,215.84, 346,677.78 and 138,045.88 is: 190,503.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,215.84 : 346,677.78 = 138,045.88 : x
  2. Step 2: Convert to fraction form
    251,215.84/346,677.78 = 138,045.88/x
  3. Step 3: Cross multiply
    251,215.84x = 346,677.78 × 138,045.88
  4. Step 4: Simplify right side
    251,215.84x = 47,857,439,216.55
  5. Step 5: Solve for x
    x = 47,857,439,216.55/251,215.84
  6. Step 6: Final answer
    x = 190,503.27

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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.