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Finding the Fourth Proportional to 251,795.94, 347,479.70 and 138,618.69

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Solution

The fourth proportional to 251,795.94, 347,479.70 and 138,618.69 is: 191,294.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,795.94 : 347,479.70 = 138,618.69 : x
  2. Step 2: Convert to fraction form
    251,795.94/347,479.70 = 138,618.69/x
  3. Step 3: Cross multiply
    251,795.94x = 347,479.70 × 138,618.69
  4. Step 4: Simplify right side
    251,795.94x = 48,167,180,815.59
  5. Step 5: Solve for x
    x = 48,167,180,815.59/251,795.94
  6. Step 6: Final answer
    x = 191,294.51

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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.