Home / 427,363.14-641,078.42-143,055.35

Finding the Fourth Proportional to 427,363.14, 641,078.42 and 143,055.35

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Solution

The fourth proportional to 427,363.14, 641,078.42 and 143,055.35 is: 214,594.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,363.14 : 641,078.42 = 143,055.35 : x
  2. Step 2: Convert to fraction form
    427,363.14/641,078.42 = 143,055.35/x
  3. Step 3: Cross multiply
    427,363.14x = 641,078.42 × 143,055.35
  4. Step 4: Simplify right side
    427,363.14x = 91,709,693,829.88
  5. Step 5: Solve for x
    x = 91,709,693,829.88/427,363.14
  6. Step 6: Final answer
    x = 214,594.30

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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.