Home / 378,177.97-521,885.61-208,412.10

Finding the Fourth Proportional to 378,177.97, 521,885.61 and 208,412.10

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Solution

The fourth proportional to 378,177.97, 521,885.61 and 208,412.10 is: 287,608.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,177.97 : 521,885.61 = 208,412.10 : x
  2. Step 2: Convert to fraction form
    378,177.97/521,885.61 = 208,412.10/x
  3. Step 3: Cross multiply
    378,177.97x = 521,885.61 × 208,412.10
  4. Step 4: Simplify right side
    378,177.97x = 108,767,273,330.45
  5. Step 5: Solve for x
    x = 108,767,273,330.45/378,177.97
  6. Step 6: Final answer
    x = 287,608.70

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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.