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Finding the Fourth Proportional to 345,316.44, 517,973.94 and 108,679.80

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Solution

The fourth proportional to 345,316.44, 517,973.94 and 108,679.80 is: 163,019.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,316.44 : 517,973.94 = 108,679.80 : x
  2. Step 2: Convert to fraction form
    345,316.44/517,973.94 = 108,679.80/x
  3. Step 3: Cross multiply
    345,316.44x = 517,973.94 × 108,679.80
  4. Step 4: Simplify right side
    345,316.44x = 56,293,304,204.41
  5. Step 5: Solve for x
    x = 56,293,304,204.41/345,316.44
  6. Step 6: Final answer
    x = 163,019.47

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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.