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Finding the Fourth Proportional to 443,564.40, 664,471.80 and 265,542.60

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Solution

The fourth proportional to 443,564.40, 664,471.80 and 265,542.60 is: 397,790.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,564.40 : 664,471.80 = 265,542.60 : x
  2. Step 2: Convert to fraction form
    443,564.40/664,471.80 = 265,542.60/x
  3. Step 3: Cross multiply
    443,564.40x = 664,471.80 × 265,542.60
  4. Step 4: Simplify right side
    443,564.40x = 176,445,569,398.68
  5. Step 5: Solve for x
    x = 176,445,569,398.68/443,564.40
  6. Step 6: Final answer
    x = 397,790.20

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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.