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Finding the Fourth Proportional to 269,428.60, 404,142.90 and 69,747.40

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Solution

The fourth proportional to 269,428.60, 404,142.90 and 69,747.40 is: 104,621.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,428.60 : 404,142.90 = 69,747.40 : x
  2. Step 2: Convert to fraction form
    269,428.60/404,142.90 = 69,747.40/x
  3. Step 3: Cross multiply
    269,428.60x = 404,142.90 × 69,747.40
  4. Step 4: Simplify right side
    269,428.60x = 28,187,916,503.46
  5. Step 5: Solve for x
    x = 28,187,916,503.46/269,428.60
  6. Step 6: Final answer
    x = 104,621.10

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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.