Home / 429,198.38-643,811.08-204,583.22

Finding the Fourth Proportional to 429,198.38, 643,811.08 and 204,583.22

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Solution

The fourth proportional to 429,198.38, 643,811.08 and 204,583.22 is: 306,881.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,198.38 : 643,811.08 = 204,583.22 : x
  2. Step 2: Convert to fraction form
    429,198.38/643,811.08 = 204,583.22/x
  3. Step 3: Cross multiply
    429,198.38x = 643,811.08 × 204,583.22
  4. Step 4: Simplify right side
    429,198.38x = 131,712,943,818.08
  5. Step 5: Solve for x
    x = 131,712,943,818.08/429,198.38
  6. Step 6: Final answer
    x = 306,881.27

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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.