Home / 272,621.60-408,932.40-75,629.60

Finding the Fourth Proportional to 272,621.60, 408,932.40 and 75,629.60

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Solution

The fourth proportional to 272,621.60, 408,932.40 and 75,629.60 is: 113,444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,621.60 : 408,932.40 = 75,629.60 : x
  2. Step 2: Convert to fraction form
    272,621.60/408,932.40 = 75,629.60/x
  3. Step 3: Cross multiply
    272,621.60x = 408,932.40 × 75,629.60
  4. Step 4: Simplify right side
    272,621.60x = 30,927,393,839.04
  5. Step 5: Solve for x
    x = 30,927,393,839.04/272,621.60
  6. Step 6: Final answer
    x = 113,444.40

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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.