Home / 426,390.27-639,576.61-142,101.46

Finding the Fourth Proportional to 426,390.27, 639,576.61 and 142,101.46

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Solution

The fourth proportional to 426,390.27, 639,576.61 and 142,101.46 is: 213,149.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,390.27 : 639,576.61 = 142,101.46 : x
  2. Step 2: Convert to fraction form
    426,390.27/639,576.61 = 142,101.46/x
  3. Step 3: Cross multiply
    426,390.27x = 639,576.61 × 142,101.46
  4. Step 4: Simplify right side
    426,390.27x = 90,884,770,062.85
  5. Step 5: Solve for x
    x = 90,884,770,062.85/426,390.27
  6. Step 6: Final answer
    x = 213,149.26

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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.