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Finding the Fourth Proportional to 443,686.85, 665,263.70 and 173,493.12

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Solution

The fourth proportional to 443,686.85, 665,263.70 and 173,493.12 is: 260,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,686.85 : 665,263.70 = 173,493.12 : x
  2. Step 2: Convert to fraction form
    443,686.85/665,263.70 = 173,493.12/x
  3. Step 3: Cross multiply
    443,686.85x = 665,263.70 × 173,493.12
  4. Step 4: Simplify right side
    443,686.85x = 115,418,677,213.62
  5. Step 5: Solve for x
    x = 115,418,677,213.62/443,686.85
  6. Step 6: Final answer
    x = 260,135.45

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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.