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Finding the Fourth Proportional to 444,965.88, 667,393.16 and 145,421.40

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Solution

The fourth proportional to 444,965.88, 667,393.16 and 145,421.40 is: 218,113.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,965.88 : 667,393.16 = 145,421.40 : x
  2. Step 2: Convert to fraction form
    444,965.88/667,393.16 = 145,421.40/x
  3. Step 3: Cross multiply
    444,965.88x = 667,393.16 × 145,421.40
  4. Step 4: Simplify right side
    444,965.88x = 97,053,247,677.62
  5. Step 5: Solve for x
    x = 97,053,247,677.62/444,965.88
  6. Step 6: Final answer
    x = 218,113.91

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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.