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Finding the Fourth Proportional to 855,967.68, 1,284,165 and 256,939.92

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Solution

The fourth proportional to 855,967.68, 1,284,165 and 256,939.92 is: 385,473.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,967.68 : 1,284,165 = 256,939.92 : x
  2. Step 2: Convert to fraction form
    855,967.68/1,284,165 = 256,939.92/x
  3. Step 3: Cross multiply
    855,967.68x = 1,284,165 × 256,939.92
  4. Step 4: Simplify right side
    855,967.68x = 329,953,252,366.80
  5. Step 5: Solve for x
    x = 329,953,252,366.80/855,967.68
  6. Step 6: Final answer
    x = 385,473.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.