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Finding the Fourth Proportional to 281,003.17, 421,726.17 and 103,634.72

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Solution

The fourth proportional to 281,003.17, 421,726.17 and 103,634.72 is: 155,533.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,003.17 : 421,726.17 = 103,634.72 : x
  2. Step 2: Convert to fraction form
    281,003.17/421,726.17 = 103,634.72/x
  3. Step 3: Cross multiply
    281,003.17x = 421,726.17 × 103,634.72
  4. Step 4: Simplify right side
    281,003.17x = 43,705,473,544.62
  5. Step 5: Solve for x
    x = 43,705,473,544.62/281,003.17
  6. Step 6: Final answer
    x = 155,533.74

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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.