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Finding the Fourth Proportional to 304,636.61, 420,414.06 and 168,685.61

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Solution

The fourth proportional to 304,636.61, 420,414.06 and 168,685.61 is: 232,794.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,636.61 : 420,414.06 = 168,685.61 : x
  2. Step 2: Convert to fraction form
    304,636.61/420,414.06 = 168,685.61/x
  3. Step 3: Cross multiply
    304,636.61x = 420,414.06 × 168,685.61
  4. Step 4: Simplify right side
    304,636.61x = 70,917,800,694.18
  5. Step 5: Solve for x
    x = 70,917,800,694.18/304,636.61
  6. Step 6: Final answer
    x = 232,794.74

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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.