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Finding the Fourth Proportional to 279,498.41, 385,719.40 and 158,650.94

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Solution

The fourth proportional to 279,498.41, 385,719.40 and 158,650.94 is: 218,944.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,498.41 : 385,719.40 = 158,650.94 : x
  2. Step 2: Convert to fraction form
    279,498.41/385,719.40 = 158,650.94/x
  3. Step 3: Cross multiply
    279,498.41x = 385,719.40 × 158,650.94
  4. Step 4: Simplify right side
    279,498.41x = 61,194,744,933.21
  5. Step 5: Solve for x
    x = 61,194,744,933.21/279,498.41
  6. Step 6: Final answer
    x = 218,944.88

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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.