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Finding the Fourth Proportional to 251,341.68, 346,872.60 and 138,185.76

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Solution

The fourth proportional to 251,341.68, 346,872.60 and 138,185.76 is: 190,707.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,341.68 : 346,872.60 = 138,185.76 : x
  2. Step 2: Convert to fraction form
    251,341.68/346,872.60 = 138,185.76/x
  3. Step 3: Cross multiply
    251,341.68x = 346,872.60 × 138,185.76
  4. Step 4: Simplify right side
    251,341.68x = 47,932,853,854.18
  5. Step 5: Solve for x
    x = 47,932,853,854.18/251,341.68
  6. Step 6: Final answer
    x = 190,707.94

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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.