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Finding the Fourth Proportional to 538,279.40, 807,224.70 and 271,951.40

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Solution

The fourth proportional to 538,279.40, 807,224.70 and 271,951.40 is: 407,828.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,279.40 : 807,224.70 = 271,951.40 : x
  2. Step 2: Convert to fraction form
    538,279.40/807,224.70 = 271,951.40/x
  3. Step 3: Cross multiply
    538,279.40x = 807,224.70 × 271,951.40
  4. Step 4: Simplify right side
    538,279.40x = 219,525,887,279.58
  5. Step 5: Solve for x
    x = 219,525,887,279.58/538,279.40
  6. Step 6: Final answer
    x = 407,828.88

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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.