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Finding the Fourth Proportional to 279,927.29, 386,299.78 and 159,068.70

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Solution

The fourth proportional to 279,927.29, 386,299.78 and 159,068.70 is: 219,514.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,927.29 : 386,299.78 = 159,068.70 : x
  2. Step 2: Convert to fraction form
    279,927.29/386,299.78 = 159,068.70/x
  3. Step 3: Cross multiply
    279,927.29x = 386,299.78 × 159,068.70
  4. Step 4: Simplify right side
    279,927.29x = 61,448,203,417.21
  5. Step 5: Solve for x
    x = 61,448,203,417.21/279,927.29
  6. Step 6: Final answer
    x = 219,514.87

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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.