Home / 378,821.07-522,862.56-217,769.58

Finding the Fourth Proportional to 378,821.07, 522,862.56 and 217,769.58

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Solution

The fourth proportional to 378,821.07, 522,862.56 and 217,769.58 is: 300,573.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,821.07 : 522,862.56 = 217,769.58 : x
  2. Step 2: Convert to fraction form
    378,821.07/522,862.56 = 217,769.58/x
  3. Step 3: Cross multiply
    378,821.07x = 522,862.56 × 217,769.58
  4. Step 4: Simplify right side
    378,821.07x = 113,863,560,088.93
  5. Step 5: Solve for x
    x = 113,863,560,088.93/378,821.07
  6. Step 6: Final answer
    x = 300,573.46

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1.5x scale

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.