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Finding the Fourth Proportional to 256,114.20, 383,393.70 and 228,120.60

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Solution

The fourth proportional to 256,114.20, 383,393.70 and 228,120.60 is: 341,488.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,114.20 : 383,393.70 = 228,120.60 : x
  2. Step 2: Convert to fraction form
    256,114.20/383,393.70 = 228,120.60/x
  3. Step 3: Cross multiply
    256,114.20x = 383,393.70 × 228,120.60
  4. Step 4: Simplify right side
    256,114.20x = 87,460,000,880.22
  5. Step 5: Solve for x
    x = 87,460,000,880.22/256,114.20
  6. Step 6: Final answer
    x = 341,488.29

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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.