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Finding the Fourth Proportional to 308,877.30, 426,098.79 and 194,295.06

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Solution

The fourth proportional to 308,877.30, 426,098.79 and 194,295.06 is: 268,031.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,877.30 : 426,098.79 = 194,295.06 : x
  2. Step 2: Convert to fraction form
    308,877.30/426,098.79 = 194,295.06/x
  3. Step 3: Cross multiply
    308,877.30x = 426,098.79 × 194,295.06
  4. Step 4: Simplify right side
    308,877.30x = 82,788,889,968.98
  5. Step 5: Solve for x
    x = 82,788,889,968.98/308,877.30
  6. Step 6: Final answer
    x = 268,031.64

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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.