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Finding the Fourth Proportional to 443,211.60, 664,039.80 and 363,896.40

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Solution

The fourth proportional to 443,211.60, 664,039.80 and 363,896.40 is: 545,206.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,211.60 : 664,039.80 = 363,896.40 : x
  2. Step 2: Convert to fraction form
    443,211.60/664,039.80 = 363,896.40/x
  3. Step 3: Cross multiply
    443,211.60x = 664,039.80 × 363,896.40
  4. Step 4: Simplify right side
    443,211.60x = 241,641,692,676.72
  5. Step 5: Solve for x
    x = 241,641,692,676.72/443,211.60
  6. Step 6: Final answer
    x = 545,206.16

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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.