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Finding the Fourth Proportional to 287,771.00, 396,997.88 and 274,430.30

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Solution

The fourth proportional to 287,771.00, 396,997.88 and 274,430.30 is: 378,593.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,771.00 : 396,997.88 = 274,430.30 : x
  2. Step 2: Convert to fraction form
    287,771.00/396,997.88 = 274,430.30/x
  3. Step 3: Cross multiply
    287,771.00x = 396,997.88 × 274,430.30
  4. Step 4: Simplify right side
    287,771.00x = 108,948,243,950.62
  5. Step 5: Solve for x
    x = 108,948,243,950.62/287,771.00
  6. Step 6: Final answer
    x = 378,593.55

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1.5x scale

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.