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Finding the Fourth Proportional to 448,138.89, 671,719.28 and 220,591.11

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Solution

The fourth proportional to 448,138.89, 671,719.28 and 220,591.11 is: 330,645.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,138.89 : 671,719.28 = 220,591.11 : x
  2. Step 2: Convert to fraction form
    448,138.89/671,719.28 = 220,591.11/x
  3. Step 3: Cross multiply
    448,138.89x = 671,719.28 × 220,591.11
  4. Step 4: Simplify right side
    448,138.89x = 148,175,297,961.70
  5. Step 5: Solve for x
    x = 148,175,297,961.70/448,138.89
  6. Step 6: Final answer
    x = 330,645.93

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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.