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Finding the Fourth Proportional to 383,056.50, 574,584.75 and 120,400.50

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Solution

The fourth proportional to 383,056.50, 574,584.75 and 120,400.50 is: 180,600.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,056.50 : 574,584.75 = 120,400.50 : x
  2. Step 2: Convert to fraction form
    383,056.50/574,584.75 = 120,400.50/x
  3. Step 3: Cross multiply
    383,056.50x = 574,584.75 × 120,400.50
  4. Step 4: Simplify right side
    383,056.50x = 69,180,291,192.38
  5. Step 5: Solve for x
    x = 69,180,291,192.38/383,056.50
  6. Step 6: Final answer
    x = 180,600.75

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Similar ratio
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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.