Home / 378,231.62-521,962.10-208,465.74

Finding the Fourth Proportional to 378,231.62, 521,962.10 and 208,465.74

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Solution

The fourth proportional to 378,231.62, 521,962.10 and 208,465.74 is: 287,684.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,231.62 : 521,962.10 = 208,465.74 : x
  2. Step 2: Convert to fraction form
    378,231.62/521,962.10 = 208,465.74/x
  3. Step 3: Cross multiply
    378,231.62x = 521,962.10 × 208,465.74
  4. Step 4: Simplify right side
    378,231.62x = 108,811,215,428.45
  5. Step 5: Solve for x
    x = 108,811,215,428.45/378,231.62
  6. Step 6: Final answer
    x = 287,684.08

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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.