Home / 378,914.40-522,906.21-209,148.66

Finding the Fourth Proportional to 378,914.40, 522,906.21 and 209,148.66

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Solution

The fourth proportional to 378,914.40, 522,906.21 and 209,148.66 is: 288,627.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,914.40 : 522,906.21 = 209,148.66 : x
  2. Step 2: Convert to fraction form
    378,914.40/522,906.21 = 209,148.66/x
  3. Step 3: Cross multiply
    378,914.40x = 522,906.21 × 209,148.66
  4. Step 4: Simplify right side
    378,914.40x = 109,365,133,127.18
  5. Step 5: Solve for x
    x = 109,365,133,127.18/378,914.40
  6. Step 6: Final answer
    x = 288,627.55

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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.