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Finding the Fourth Proportional to 443,143.45, 664,575.74 and 143,554.52

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Solution

The fourth proportional to 443,143.45, 664,575.74 and 143,554.52 is: 215,286.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,143.45 : 664,575.74 = 143,554.52 : x
  2. Step 2: Convert to fraction form
    443,143.45/664,575.74 = 143,554.52/x
  3. Step 3: Cross multiply
    443,143.45x = 664,575.74 × 143,554.52
  4. Step 4: Simplify right side
    443,143.45x = 95,402,847,318.69
  5. Step 5: Solve for x
    x = 95,402,847,318.69/443,143.45
  6. Step 6: Final answer
    x = 215,286.60

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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.