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Finding the Fourth Proportional to 501,336.79, 691,841.91 and 271,891.78

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Solution

The fourth proportional to 501,336.79, 691,841.91 and 271,891.78 is: 375,209.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,336.79 : 691,841.91 = 271,891.78 : x
  2. Step 2: Convert to fraction form
    501,336.79/691,841.91 = 271,891.78/x
  3. Step 3: Cross multiply
    501,336.79x = 691,841.91 × 271,891.78
  4. Step 4: Simplify right side
    501,336.79x = 188,106,128,388.50
  5. Step 5: Solve for x
    x = 188,106,128,388.50/501,336.79
  6. Step 6: Final answer
    x = 375,209.11

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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.