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Finding the Fourth Proportional to 304,584.60, 420,323.40 and 168,618.72

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Solution

The fourth proportional to 304,584.60, 420,323.40 and 168,618.72 is: 232,691.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,584.60 : 420,323.40 = 168,618.72 : x
  2. Step 2: Convert to fraction form
    304,584.60/420,323.40 = 168,618.72/x
  3. Step 3: Cross multiply
    304,584.60x = 420,323.40 × 168,618.72
  4. Step 4: Simplify right side
    304,584.60x = 70,874,393,694.05
  5. Step 5: Solve for x
    x = 70,874,393,694.05/304,584.60
  6. Step 6: Final answer
    x = 232,691.98

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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.