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Finding the Fourth Proportional to 423,685.63, 635,220.51 and 198,930.34

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Solution

The fourth proportional to 423,685.63, 635,220.51 and 198,930.34 is: 298,250.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,685.63 : 635,220.51 = 198,930.34 : x
  2. Step 2: Convert to fraction form
    423,685.63/635,220.51 = 198,930.34/x
  3. Step 3: Cross multiply
    423,685.63x = 635,220.51 × 198,930.34
  4. Step 4: Simplify right side
    423,685.63x = 126,364,632,029.27
  5. Step 5: Solve for x
    x = 126,364,632,029.27/423,685.63
  6. Step 6: Final answer
    x = 298,250.93

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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.