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Finding the Fourth Proportional to 251,371.94, 346,895.63 and 138,195.50

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Solution

The fourth proportional to 251,371.94, 346,895.63 and 138,195.50 is: 190,711.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,371.94 : 346,895.63 = 138,195.50 : x
  2. Step 2: Convert to fraction form
    251,371.94/346,895.63 = 138,195.50/x
  3. Step 3: Cross multiply
    251,371.94x = 346,895.63 × 138,195.50
  4. Step 4: Simplify right side
    251,371.94x = 47,939,415,035.67
  5. Step 5: Solve for x
    x = 47,939,415,035.67/251,371.94
  6. Step 6: Final answer
    x = 190,711.08

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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.