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Finding the Fourth Proportional to 443,886.12, 665,996.94 and 266,516.46

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Solution

The fourth proportional to 443,886.12, 665,996.94 and 266,516.46 is: 399,875.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,886.12 : 665,996.94 = 266,516.46 : x
  2. Step 2: Convert to fraction form
    443,886.12/665,996.94 = 266,516.46/x
  3. Step 3: Cross multiply
    443,886.12x = 665,996.94 × 266,516.46
  4. Step 4: Simplify right side
    443,886.12x = 177,499,146,819.63
  5. Step 5: Solve for x
    x = 177,499,146,819.63/443,886.12
  6. Step 6: Final answer
    x = 399,875.42

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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.