Home / 429,376.82-643,084.25-204,894.86

Finding the Fourth Proportional to 429,376.82, 643,084.25 and 204,894.86

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Solution

The fourth proportional to 429,376.82, 643,084.25 and 204,894.86 is: 306,874.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,376.82 : 643,084.25 = 204,894.86 : x
  2. Step 2: Convert to fraction form
    429,376.82/643,084.25 = 204,894.86/x
  3. Step 3: Cross multiply
    429,376.82x = 643,084.25 × 204,894.86
  4. Step 4: Simplify right side
    429,376.82x = 131,764,653,132.06
  5. Step 5: Solve for x
    x = 131,764,653,132.06/429,376.82
  6. Step 6: Final answer
    x = 306,874.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.