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Finding the Fourth Proportional to 269,402.60, 403,844.70 and 209,397.80

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Solution

The fourth proportional to 269,402.60, 403,844.70 and 209,397.80 is: 313,895.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,402.60 : 403,844.70 = 209,397.80 : x
  2. Step 2: Convert to fraction form
    269,402.60/403,844.70 = 209,397.80/x
  3. Step 3: Cross multiply
    269,402.60x = 403,844.70 × 209,397.80
  4. Step 4: Simplify right side
    269,402.60x = 84,564,191,721.66
  5. Step 5: Solve for x
    x = 84,564,191,721.66/269,402.60
  6. Step 6: Final answer
    x = 313,895.23

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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.