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Finding the Fourth Proportional to 383,512.60, 574,612.80 and 243,107.20

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Solution

The fourth proportional to 383,512.60, 574,612.80 and 243,107.20 is: 364,244.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,512.60 : 574,612.80 = 243,107.20 : x
  2. Step 2: Convert to fraction form
    383,512.60/574,612.80 = 243,107.20/x
  3. Step 3: Cross multiply
    383,512.60x = 574,612.80 × 243,107.20
  4. Step 4: Simplify right side
    383,512.60x = 139,692,508,892.16
  5. Step 5: Solve for x
    x = 139,692,508,892.16/383,512.60
  6. Step 6: Final answer
    x = 364,244.90

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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.