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Finding the Fourth Proportional to 482,617, 666,012 and 281,451.88

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Solution

The fourth proportional to 482,617, 666,012 and 281,451.88 is: 388,403.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,617 : 666,012 = 281,451.88 : x
  2. Step 2: Convert to fraction form
    482,617/666,012 = 281,451.88/x
  3. Step 3: Cross multiply
    482,617x = 666,012 × 281,451.88
  4. Step 4: Simplify right side
    482,617x = 187,450,329,502.56
  5. Step 5: Solve for x
    x = 187,450,329,502.56/482,617
  6. Step 6: Final answer
    x = 388,403.91

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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.