Home / 427,365.14-641,081.42-143,057.35

Finding the Fourth Proportional to 427,365.14, 641,081.42 and 143,057.35

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Solution

The fourth proportional to 427,365.14, 641,081.42 and 143,057.35 is: 214,597.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,365.14 : 641,081.42 = 143,057.35 : x
  2. Step 2: Convert to fraction form
    427,365.14/641,081.42 = 143,057.35/x
  3. Step 3: Cross multiply
    427,365.14x = 641,081.42 × 143,057.35
  4. Step 4: Simplify right side
    427,365.14x = 91,711,409,079.44
  5. Step 5: Solve for x
    x = 91,711,409,079.44/427,365.14
  6. Step 6: Final answer
    x = 214,597.31

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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.