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Finding the Fourth Proportional to 443,858.31, 665,955.06 and 266,488.95

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Solution

The fourth proportional to 443,858.31, 665,955.06 and 266,488.95 is: 399,834.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,858.31 : 665,955.06 = 266,488.95 : x
  2. Step 2: Convert to fraction form
    443,858.31/665,955.06 = 266,488.95/x
  3. Step 3: Cross multiply
    443,858.31x = 665,955.06 × 266,488.95
  4. Step 4: Simplify right side
    443,858.31x = 177,469,664,686.59
  5. Step 5: Solve for x
    x = 177,469,664,686.59/443,858.31
  6. Step 6: Final answer
    x = 399,834.05

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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.