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Finding the Fourth Proportional to 465,607.76, 642,555.62 and 261,662.72

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Solution

The fourth proportional to 465,607.76, 642,555.62 and 261,662.72 is: 361,104.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,607.76 : 642,555.62 = 261,662.72 : x
  2. Step 2: Convert to fraction form
    465,607.76/642,555.62 = 261,662.72/x
  3. Step 3: Cross multiply
    465,607.76x = 642,555.62 × 261,662.72
  4. Step 4: Simplify right side
    465,607.76x = 168,132,846,759.40
  5. Step 5: Solve for x
    x = 168,132,846,759.40/465,607.76
  6. Step 6: Final answer
    x = 361,104.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.