Home / 384,905.68-531,160.40-212,819.11

Finding the Fourth Proportional to 384,905.68, 531,160.40 and 212,819.11

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Solution

The fourth proportional to 384,905.68, 531,160.40 and 212,819.11 is: 293,685.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,905.68 : 531,160.40 = 212,819.11 : x
  2. Step 2: Convert to fraction form
    384,905.68/531,160.40 = 212,819.11/x
  3. Step 3: Cross multiply
    384,905.68x = 531,160.40 × 212,819.11
  4. Step 4: Simplify right side
    384,905.68x = 113,041,082,799.39
  5. Step 5: Solve for x
    x = 113,041,082,799.39/384,905.68
  6. Step 6: Final answer
    x = 293,685.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.