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Finding the Fourth Proportional to 443,040.40, 664,657.80 and 218,508.40

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Solution

The fourth proportional to 443,040.40, 664,657.80 and 218,508.40 is: 327,810.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,040.40 : 664,657.80 = 218,508.40 : x
  2. Step 2: Convert to fraction form
    443,040.40/664,657.80 = 218,508.40/x
  3. Step 3: Cross multiply
    443,040.40x = 664,657.80 × 218,508.40
  4. Step 4: Simplify right side
    443,040.40x = 145,233,312,425.52
  5. Step 5: Solve for x
    x = 145,233,312,425.52/443,040.40
  6. Step 6: Final answer
    x = 327,810.54

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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.