Home / 427,432.20-641,148.30-178,081.80

Finding the Fourth Proportional to 427,432.20, 641,148.30 and 178,081.80

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Solution

The fourth proportional to 427,432.20, 641,148.30 and 178,081.80 is: 267,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,432.20 : 641,148.30 = 178,081.80 : x
  2. Step 2: Convert to fraction form
    427,432.20/641,148.30 = 178,081.80/x
  3. Step 3: Cross multiply
    427,432.20x = 641,148.30 × 178,081.80
  4. Step 4: Simplify right side
    427,432.20x = 114,176,843,330.94
  5. Step 5: Solve for x
    x = 114,176,843,330.94/427,432.20
  6. Step 6: Final answer
    x = 267,122.70

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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.