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Finding the Fourth Proportional to 274,529.28, 411,789.60 and 87,539.52

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Solution

The fourth proportional to 274,529.28, 411,789.60 and 87,539.52 is: 131,307.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,529.28 : 411,789.60 = 87,539.52 : x
  2. Step 2: Convert to fraction form
    274,529.28/411,789.60 = 87,539.52/x
  3. Step 3: Cross multiply
    274,529.28x = 411,789.60 × 87,539.52
  4. Step 4: Simplify right side
    274,529.28x = 36,047,863,924.99
  5. Step 5: Solve for x
    x = 36,047,863,924.99/274,529.28
  6. Step 6: Final answer
    x = 131,307.90

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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.