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Finding the Fourth Proportional to 292,395.15, 403,865.19 and 211,694.85

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Solution

The fourth proportional to 292,395.15, 403,865.19 and 211,694.85 is: 292,399.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,395.15 : 403,865.19 = 211,694.85 : x
  2. Step 2: Convert to fraction form
    292,395.15/403,865.19 = 211,694.85/x
  3. Step 3: Cross multiply
    292,395.15x = 403,865.19 × 211,694.85
  4. Step 4: Simplify right side
    292,395.15x = 85,496,180,817.27
  5. Step 5: Solve for x
    x = 85,496,180,817.27/292,395.15
  6. Step 6: Final answer
    x = 292,399.45

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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.