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Finding the Fourth Proportional to 443,350.30, 665,122.65 and 143,779.90

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Solution

The fourth proportional to 443,350.30, 665,122.65 and 143,779.90 is: 215,701.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,350.30 : 665,122.65 = 143,779.90 : x
  2. Step 2: Convert to fraction form
    443,350.30/665,122.65 = 143,779.90/x
  3. Step 3: Cross multiply
    443,350.30x = 665,122.65 × 143,779.90
  4. Step 4: Simplify right side
    443,350.30x = 95,631,268,104.74
  5. Step 5: Solve for x
    x = 95,631,268,104.74/443,350.30
  6. Step 6: Final answer
    x = 215,701.37

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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.