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Finding the Fourth Proportional to 443,883.12, 665,686.44 and 148,326

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Solution

The fourth proportional to 443,883.12, 665,686.44 and 148,326 is: 222,442.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,883.12 : 665,686.44 = 148,326 : x
  2. Step 2: Convert to fraction form
    443,883.12/665,686.44 = 148,326/x
  3. Step 3: Cross multiply
    443,883.12x = 665,686.44 × 148,326
  4. Step 4: Simplify right side
    443,883.12x = 98,738,606,899.44
  5. Step 5: Solve for x
    x = 98,738,606,899.44/443,883.12
  6. Step 6: Final answer
    x = 222,442.81

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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.