Home / 427,359.38-641,072.78-143,051.60

Finding the Fourth Proportional to 427,359.38, 641,072.78 and 143,051.60

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Solution

The fourth proportional to 427,359.38, 641,072.78 and 143,051.60 is: 214,588.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,359.38 : 641,072.78 = 143,051.60 : x
  2. Step 2: Convert to fraction form
    427,359.38/641,072.78 = 143,051.60/x
  3. Step 3: Cross multiply
    427,359.38x = 641,072.78 × 143,051.60
  4. Step 4: Simplify right side
    427,359.38x = 91,706,482,974.83
  5. Step 5: Solve for x
    x = 91,706,482,974.83/427,359.38
  6. Step 6: Final answer
    x = 214,588.68

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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.