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Finding the Fourth Proportional to 319,491.52, 441,043.12 and 203,252.78

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Solution

The fourth proportional to 319,491.52, 441,043.12 and 203,252.78 is: 280,580.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,491.52 : 441,043.12 = 203,252.78 : x
  2. Step 2: Convert to fraction form
    319,491.52/441,043.12 = 203,252.78/x
  3. Step 3: Cross multiply
    319,491.52x = 441,043.12 × 203,252.78
  4. Step 4: Simplify right side
    319,491.52x = 89,643,240,239.87
  5. Step 5: Solve for x
    x = 89,643,240,239.87/319,491.52
  6. Step 6: Final answer
    x = 280,580.97

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1.5x scale

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.