Home / 426,740.08-639,969.38-142,352.26

Finding the Fourth Proportional to 426,740.08, 639,969.38 and 142,352.26

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Solution

The fourth proportional to 426,740.08, 639,969.38 and 142,352.26 is: 213,481.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,740.08 : 639,969.38 = 142,352.26 : x
  2. Step 2: Convert to fraction form
    426,740.08/639,969.38 = 142,352.26/x
  3. Step 3: Cross multiply
    426,740.08x = 639,969.38 × 142,352.26
  4. Step 4: Simplify right side
    426,740.08x = 91,101,087,573.80
  5. Step 5: Solve for x
    x = 91,101,087,573.80/426,740.08
  6. Step 6: Final answer
    x = 213,481.44

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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.