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Finding the Fourth Proportional to 256,042.80, 384,064.20 and 228,049.20

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Solution

The fourth proportional to 256,042.80, 384,064.20 and 228,049.20 is: 342,073.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,042.80 : 384,064.20 = 228,049.20 : x
  2. Step 2: Convert to fraction form
    256,042.80/384,064.20 = 228,049.20/x
  3. Step 3: Cross multiply
    256,042.80x = 384,064.20 × 228,049.20
  4. Step 4: Simplify right side
    256,042.80x = 87,585,533,558.64
  5. Step 5: Solve for x
    x = 87,585,533,558.64/256,042.80
  6. Step 6: Final answer
    x = 342,073.80

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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.