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Finding the Fourth Proportional to 273,990.40, 411,024.78 and 84,466.80

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Solution

The fourth proportional to 273,990.40, 411,024.78 and 84,466.80 is: 126,712.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,990.40 : 411,024.78 = 84,466.80 : x
  2. Step 2: Convert to fraction form
    273,990.40/411,024.78 = 84,466.80/x
  3. Step 3: Cross multiply
    273,990.40x = 411,024.78 × 84,466.80
  4. Step 4: Simplify right side
    273,990.40x = 34,717,947,887.30
  5. Step 5: Solve for x
    x = 34,717,947,887.30/273,990.40
  6. Step 6: Final answer
    x = 126,712.28

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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.