Home / 296,219.20-408,780.80-272,120

Finding the Fourth Proportional to 296,219.20, 408,780.80 and 272,120

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Solution

The fourth proportional to 296,219.20, 408,780.80 and 272,120 is: 375,524.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,219.20 : 408,780.80 = 272,120 : x
  2. Step 2: Convert to fraction form
    296,219.20/408,780.80 = 272,120/x
  3. Step 3: Cross multiply
    296,219.20x = 408,780.80 × 272,120
  4. Step 4: Simplify right side
    296,219.20x = 111,237,431,296
  5. Step 5: Solve for x
    x = 111,237,431,296/296,219.20
  6. Step 6: Final answer
    x = 375,524.04

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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.