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Finding the Fourth Proportional to 444,121.20, 666,181.80 and 266,828.40

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Solution

The fourth proportional to 444,121.20, 666,181.80 and 266,828.40 is: 400,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,121.20 : 666,181.80 = 266,828.40 : x
  2. Step 2: Convert to fraction form
    444,121.20/666,181.80 = 266,828.40/x
  3. Step 3: Cross multiply
    444,121.20x = 666,181.80 × 266,828.40
  4. Step 4: Simplify right side
    444,121.20x = 177,756,223,803.12
  5. Step 5: Solve for x
    x = 177,756,223,803.12/444,121.20
  6. Step 6: Final answer
    x = 400,242.60

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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.