Home / 427,651.71-641,620.08-143,370.36

Finding the Fourth Proportional to 427,651.71, 641,620.08 and 143,370.36

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Solution

The fourth proportional to 427,651.71, 641,620.08 and 143,370.36 is: 215,103.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,651.71 : 641,620.08 = 143,370.36 : x
  2. Step 2: Convert to fraction form
    427,651.71/641,620.08 = 143,370.36/x
  3. Step 3: Cross multiply
    427,651.71x = 641,620.08 × 143,370.36
  4. Step 4: Simplify right side
    427,651.71x = 91,989,301,852.83
  5. Step 5: Solve for x
    x = 91,989,301,852.83/427,651.71
  6. Step 6: Final answer
    x = 215,103.32

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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.