Home / 427,867.08-641,815.50-203,111.73

Finding the Fourth Proportional to 427,867.08, 641,815.50 and 203,111.73

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Solution

The fourth proportional to 427,867.08, 641,815.50 and 203,111.73 is: 304,674.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,867.08 : 641,815.50 = 203,111.73 : x
  2. Step 2: Convert to fraction form
    427,867.08/641,815.50 = 203,111.73/x
  3. Step 3: Cross multiply
    427,867.08x = 641,815.50 × 203,111.73
  4. Step 4: Simplify right side
    427,867.08x = 130,360,256,545.82
  5. Step 5: Solve for x
    x = 130,360,256,545.82/427,867.08
  6. Step 6: Final answer
    x = 304,674.66

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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.