Home / 378,914.78-522,902.40-209,148.92

Finding the Fourth Proportional to 378,914.78, 522,902.40 and 209,148.92

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Solution

The fourth proportional to 378,914.78, 522,902.40 and 209,148.92 is: 288,625.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,914.78 : 522,902.40 = 209,148.92 : x
  2. Step 2: Convert to fraction form
    378,914.78/522,902.40 = 209,148.92/x
  3. Step 3: Cross multiply
    378,914.78x = 522,902.40 × 209,148.92
  4. Step 4: Simplify right side
    378,914.78x = 109,364,472,225.41
  5. Step 5: Solve for x
    x = 109,364,472,225.41/378,914.78
  6. Step 6: Final answer
    x = 288,625.51

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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.