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Finding the Fourth Proportional to 462,832.80, 638,700.80 and 261,628.80

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Solution

The fourth proportional to 462,832.80, 638,700.80 and 261,628.80 is: 361,042.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,832.80 : 638,700.80 = 261,628.80 : x
  2. Step 2: Convert to fraction form
    462,832.80/638,700.80 = 261,628.80/x
  3. Step 3: Cross multiply
    462,832.80x = 638,700.80 × 261,628.80
  4. Step 4: Simplify right side
    462,832.80x = 167,102,523,863.04
  5. Step 5: Solve for x
    x = 167,102,523,863.04/462,832.80
  6. Step 6: Final answer
    x = 361,042.96

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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.