Home / 427,645.10-641,610.15-143,363.75

Finding the Fourth Proportional to 427,645.10, 641,610.15 and 143,363.75

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Solution

The fourth proportional to 427,645.10, 641,610.15 and 143,363.75 is: 215,093.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,645.10 : 641,610.15 = 143,363.75 : x
  2. Step 2: Convert to fraction form
    427,645.10/641,610.15 = 143,363.75/x
  3. Step 3: Cross multiply
    427,645.10x = 641,610.15 × 143,363.75
  4. Step 4: Simplify right side
    427,645.10x = 91,983,637,142.06
  5. Step 5: Solve for x
    x = 91,983,637,142.06/427,645.10
  6. Step 6: Final answer
    x = 215,093.40

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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.