Home / 423,734.10-635,292.98-198,978.72

Finding the Fourth Proportional to 423,734.10, 635,292.98 and 198,978.72

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Solution

The fourth proportional to 423,734.10, 635,292.98 and 198,978.72 is: 298,323.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,734.10 : 635,292.98 = 198,978.72 : x
  2. Step 2: Convert to fraction form
    423,734.10/635,292.98 = 198,978.72/x
  3. Step 3: Cross multiply
    423,734.10x = 635,292.98 × 198,978.72
  4. Step 4: Simplify right side
    423,734.10x = 126,409,783,985.39
  5. Step 5: Solve for x
    x = 126,409,783,985.39/423,734.10
  6. Step 6: Final answer
    x = 298,323.37

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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.