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Finding the Fourth Proportional to 276,992.55, 382,343.76 and 172,298.43

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Solution

The fourth proportional to 276,992.55, 382,343.76 and 172,298.43 is: 237,830.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,992.55 : 382,343.76 = 172,298.43 : x
  2. Step 2: Convert to fraction form
    276,992.55/382,343.76 = 172,298.43/x
  3. Step 3: Cross multiply
    276,992.55x = 382,343.76 × 172,298.43
  4. Step 4: Simplify right side
    276,992.55x = 65,877,229,568.30
  5. Step 5: Solve for x
    x = 65,877,229,568.30/276,992.55
  6. Step 6: Final answer
    x = 237,830.33

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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.