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Finding the Fourth Proportional to 295,286.40, 441,763.20 and 256,276.80

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Solution

The fourth proportional to 295,286.40, 441,763.20 and 256,276.80 is: 383,402.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,286.40 : 441,763.20 = 256,276.80 : x
  2. Step 2: Convert to fraction form
    295,286.40/441,763.20 = 256,276.80/x
  3. Step 3: Cross multiply
    295,286.40x = 441,763.20 × 256,276.80
  4. Step 4: Simplify right side
    295,286.40x = 113,213,659,253.76
  5. Step 5: Solve for x
    x = 113,213,659,253.76/295,286.40
  6. Step 6: Final answer
    x = 383,402.89

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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.