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Finding the Fourth Proportional to 345,104.38, 517,578.81 and 134,633.98

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Solution

The fourth proportional to 345,104.38, 517,578.81 and 134,633.98 is: 201,920.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,104.38 : 517,578.81 = 134,633.98 : x
  2. Step 2: Convert to fraction form
    345,104.38/517,578.81 = 134,633.98/x
  3. Step 3: Cross multiply
    345,104.38x = 517,578.81 × 134,633.98
  4. Step 4: Simplify right side
    345,104.38x = 69,683,695,153.96
  5. Step 5: Solve for x
    x = 69,683,695,153.96/345,104.38
  6. Step 6: Final answer
    x = 201,920.63

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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.