Home / 231,818.40-347,641.20-82,000.80

Finding the Fourth Proportional to 231,818.40, 347,641.20 and 82,000.80

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Solution

The fourth proportional to 231,818.40, 347,641.20 and 82,000.80 is: 122,970.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,818.40 : 347,641.20 = 82,000.80 : x
  2. Step 2: Convert to fraction form
    231,818.40/347,641.20 = 82,000.80/x
  3. Step 3: Cross multiply
    231,818.40x = 347,641.20 × 82,000.80
  4. Step 4: Simplify right side
    231,818.40x = 28,506,856,512.96
  5. Step 5: Solve for x
    x = 28,506,856,512.96/231,818.40
  6. Step 6: Final answer
    x = 122,970.64

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1.5x scale

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.