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Finding the Fourth Proportional to 206,613.36, 310,030.76 and 191,555.86

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Solution

The fourth proportional to 206,613.36, 310,030.76 and 191,555.86 is: 287,436.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,613.36 : 310,030.76 = 191,555.86 : x
  2. Step 2: Convert to fraction form
    206,613.36/310,030.76 = 191,555.86/x
  3. Step 3: Cross multiply
    206,613.36x = 310,030.76 × 191,555.86
  4. Step 4: Simplify right side
    206,613.36x = 59,388,208,858.25
  5. Step 5: Solve for x
    x = 59,388,208,858.25/206,613.36
  6. Step 6: Final answer
    x = 287,436.44

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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.