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Finding the Fourth Proportional to 269,396.60, 403,483.19 and 208,939.77

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Solution

The fourth proportional to 269,396.60, 403,483.19 and 208,939.77 is: 312,935.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,396.60 : 403,483.19 = 208,939.77 : x
  2. Step 2: Convert to fraction form
    269,396.60/403,483.19 = 208,939.77/x
  3. Step 3: Cross multiply
    269,396.60x = 403,483.19 × 208,939.77
  4. Step 4: Simplify right side
    269,396.60x = 84,303,683,872.77
  5. Step 5: Solve for x
    x = 84,303,683,872.77/269,396.60
  6. Step 6: Final answer
    x = 312,935.22

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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.