Home / 380,299.14-571,009.41-212,148

Finding the Fourth Proportional to 380,299.14, 571,009.41 and 212,148

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Solution

The fourth proportional to 380,299.14, 571,009.41 and 212,148 is: 318,534.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,299.14 : 571,009.41 = 212,148 : x
  2. Step 2: Convert to fraction form
    380,299.14/571,009.41 = 212,148/x
  3. Step 3: Cross multiply
    380,299.14x = 571,009.41 × 212,148
  4. Step 4: Simplify right side
    380,299.14x = 121,138,504,312.68
  5. Step 5: Solve for x
    x = 121,138,504,312.68/380,299.14
  6. Step 6: Final answer
    x = 318,534.78

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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.