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Finding the Fourth Proportional to 443,779.30, 665,280.15 and 266,097.70

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Solution

The fourth proportional to 443,779.30, 665,280.15 and 266,097.70 is: 398,913.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,779.30 : 665,280.15 = 266,097.70 : x
  2. Step 2: Convert to fraction form
    443,779.30/665,280.15 = 266,097.70/x
  3. Step 3: Cross multiply
    443,779.30x = 665,280.15 × 266,097.70
  4. Step 4: Simplify right side
    443,779.30x = 177,029,517,770.66
  5. Step 5: Solve for x
    x = 177,029,517,770.66/443,779.30
  6. Step 6: Final answer
    x = 398,913.42

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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.