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Finding the Fourth Proportional to 383,480.76, 529,205.22 and 222,431.16

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Solution

The fourth proportional to 383,480.76, 529,205.22 and 222,431.16 is: 306,956.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,480.76 : 529,205.22 = 222,431.16 : x
  2. Step 2: Convert to fraction form
    383,480.76/529,205.22 = 222,431.16/x
  3. Step 3: Cross multiply
    383,480.76x = 529,205.22 × 222,431.16
  4. Step 4: Simplify right side
    383,480.76x = 117,711,730,962.66
  5. Step 5: Solve for x
    x = 117,711,730,962.66/383,480.76
  6. Step 6: Final answer
    x = 306,956.03

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.