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Finding the Fourth Proportional to 641,355.96, 962,089 and 168,041.36

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Solution

The fourth proportional to 641,355.96, 962,089 and 168,041.36 is: 252,076.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,355.96 : 962,089 = 168,041.36 : x
  2. Step 2: Convert to fraction form
    641,355.96/962,089 = 168,041.36/x
  3. Step 3: Cross multiply
    641,355.96x = 962,089 × 168,041.36
  4. Step 4: Simplify right side
    641,355.96x = 161,670,744,001.04
  5. Step 5: Solve for x
    x = 161,670,744,001.04/641,355.96
  6. Step 6: Final answer
    x = 252,076.47

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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.