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Finding the Fourth Proportional to 443,265.90, 665,106.48 and 218,503.59

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Solution

The fourth proportional to 443,265.90, 665,106.48 and 218,503.59 is: 327,857.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,265.90 : 665,106.48 = 218,503.59 : x
  2. Step 2: Convert to fraction form
    443,265.90/665,106.48 = 218,503.59/x
  3. Step 3: Cross multiply
    443,265.90x = 665,106.48 × 218,503.59
  4. Step 4: Simplify right side
    443,265.90x = 145,328,153,612.26
  5. Step 5: Solve for x
    x = 145,328,153,612.26/443,265.90
  6. Step 6: Final answer
    x = 327,857.73

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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.