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Finding the Fourth Proportional to 282,342.46, 389,521.48 and 161,418.79

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Solution

The fourth proportional to 282,342.46, 389,521.48 and 161,418.79 is: 222,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,342.46 : 389,521.48 = 161,418.79 : x
  2. Step 2: Convert to fraction form
    282,342.46/389,521.48 = 161,418.79/x
  3. Step 3: Cross multiply
    282,342.46x = 389,521.48 × 161,418.79
  4. Step 4: Simplify right side
    282,342.46x = 62,876,085,980.61
  5. Step 5: Solve for x
    x = 62,876,085,980.61/282,342.46
  6. Step 6: Final answer
    x = 222,694.40

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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.