Home / 263,316.18-394,898.85-85,838.70

Finding the Fourth Proportional to 263,316.18, 394,898.85 and 85,838.70

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Solution

The fourth proportional to 263,316.18, 394,898.85 and 85,838.70 is: 128,733.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,316.18 : 394,898.85 = 85,838.70 : x
  2. Step 2: Convert to fraction form
    263,316.18/394,898.85 = 85,838.70/x
  3. Step 3: Cross multiply
    263,316.18x = 394,898.85 × 85,838.70
  4. Step 4: Simplify right side
    263,316.18x = 33,897,603,915.50
  5. Step 5: Solve for x
    x = 33,897,603,915.50/263,316.18
  6. Step 6: Final answer
    x = 128,733.46

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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.