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Finding the Fourth Proportional to 443,425.55, 665,138.33 and 310,455.95

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Solution

The fourth proportional to 443,425.55, 665,138.33 and 310,455.95 is: 465,683.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,425.55 : 665,138.33 = 310,455.95 : x
  2. Step 2: Convert to fraction form
    443,425.55/665,138.33 = 310,455.95/x
  3. Step 3: Cross multiply
    443,425.55x = 665,138.33 × 310,455.95
  4. Step 4: Simplify right side
    443,425.55x = 206,496,150,569.28
  5. Step 5: Solve for x
    x = 206,496,150,569.28/443,425.55
  6. Step 6: Final answer
    x = 465,683.93

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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.