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Finding the Fourth Proportional to 275,705.60, 413,558.40 and 251,211.20

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Solution

The fourth proportional to 275,705.60, 413,558.40 and 251,211.20 is: 376,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,705.60 : 413,558.40 = 251,211.20 : x
  2. Step 2: Convert to fraction form
    275,705.60/413,558.40 = 251,211.20/x
  3. Step 3: Cross multiply
    275,705.60x = 413,558.40 × 251,211.20
  4. Step 4: Simplify right side
    275,705.60x = 103,890,501,934.08
  5. Step 5: Solve for x
    x = 103,890,501,934.08/275,705.60
  6. Step 6: Final answer
    x = 376,816.80

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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.