Home / 380,260.25-570,951.09-212,109.11

Finding the Fourth Proportional to 380,260.25, 570,951.09 and 212,109.11

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Solution

The fourth proportional to 380,260.25, 570,951.09 and 212,109.11 is: 318,476.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,260.25 : 570,951.09 = 212,109.11 : x
  2. Step 2: Convert to fraction form
    380,260.25/570,951.09 = 212,109.11/x
  3. Step 3: Cross multiply
    380,260.25x = 570,951.09 × 212,109.11
  4. Step 4: Simplify right side
    380,260.25x = 121,103,927,553.43
  5. Step 5: Solve for x
    x = 121,103,927,553.43/380,260.25
  6. Step 6: Final answer
    x = 318,476.43

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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.