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Finding the Fourth Proportional to 269,368.76, 371,342.50 and 211,908.21

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Solution

The fourth proportional to 269,368.76, 371,342.50 and 211,908.21 is: 292,129.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,368.76 : 371,342.50 = 211,908.21 : x
  2. Step 2: Convert to fraction form
    269,368.76/371,342.50 = 211,908.21/x
  3. Step 3: Cross multiply
    269,368.76x = 371,342.50 × 211,908.21
  4. Step 4: Simplify right side
    269,368.76x = 78,690,522,484.03
  5. Step 5: Solve for x
    x = 78,690,522,484.03/269,368.76
  6. Step 6: Final answer
    x = 292,129.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.