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Finding the Fourth Proportional to 551,256.20, 826,908.60 and 311,366.60

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Solution

The fourth proportional to 551,256.20, 826,908.60 and 311,366.60 is: 467,063.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,256.20 : 826,908.60 = 311,366.60 : x
  2. Step 2: Convert to fraction form
    551,256.20/826,908.60 = 311,366.60/x
  3. Step 3: Cross multiply
    551,256.20x = 826,908.60 × 311,366.60
  4. Step 4: Simplify right side
    551,256.20x = 257,471,719,292.76
  5. Step 5: Solve for x
    x = 257,471,719,292.76/551,256.20
  6. Step 6: Final answer
    x = 467,063.63

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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.