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Finding the Fourth Proportional to 343,613.53, 515,573.39 and 133,267.87

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Solution

The fourth proportional to 343,613.53, 515,573.39 and 133,267.87 is: 199,961.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,613.53 : 515,573.39 = 133,267.87 : x
  2. Step 2: Convert to fraction form
    343,613.53/515,573.39 = 133,267.87/x
  3. Step 3: Cross multiply
    343,613.53x = 515,573.39 × 133,267.87
  4. Step 4: Simplify right side
    343,613.53x = 68,709,367,513.98
  5. Step 5: Solve for x
    x = 68,709,367,513.98/343,613.53
  6. Step 6: Final answer
    x = 199,961.18

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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.