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Finding the Fourth Proportional to 531,115.89, 796,909.28 and 278,336.27

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Solution

The fourth proportional to 531,115.89, 796,909.28 and 278,336.27 is: 417,627.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,115.89 : 796,909.28 = 278,336.27 : x
  2. Step 2: Convert to fraction form
    531,115.89/796,909.28 = 278,336.27/x
  3. Step 3: Cross multiply
    531,115.89x = 796,909.28 × 278,336.27
  4. Step 4: Simplify right side
    531,115.89x = 221,808,759,211.70
  5. Step 5: Solve for x
    x = 221,808,759,211.70/531,115.89
  6. Step 6: Final answer
    x = 417,627.80

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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.