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Finding the Fourth Proportional to 444,139.20, 666,208.80 and 402,148.80

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Solution

The fourth proportional to 444,139.20, 666,208.80 and 402,148.80 is: 603,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,139.20 : 666,208.80 = 402,148.80 : x
  2. Step 2: Convert to fraction form
    444,139.20/666,208.80 = 402,148.80/x
  3. Step 3: Cross multiply
    444,139.20x = 666,208.80 × 402,148.80
  4. Step 4: Simplify right side
    444,139.20x = 267,915,069,469.44
  5. Step 5: Solve for x
    x = 267,915,069,469.44/444,139.20
  6. Step 6: Final answer
    x = 603,223.20

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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.