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Finding the Fourth Proportional to 289,674.30, 434,511.45 and 252,810.30

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Solution

The fourth proportional to 289,674.30, 434,511.45 and 252,810.30 is: 379,215.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,674.30 : 434,511.45 = 252,810.30 : x
  2. Step 2: Convert to fraction form
    289,674.30/434,511.45 = 252,810.30/x
  3. Step 3: Cross multiply
    289,674.30x = 434,511.45 × 252,810.30
  4. Step 4: Simplify right side
    289,674.30x = 109,848,970,027.94
  5. Step 5: Solve for x
    x = 109,848,970,027.94/289,674.30
  6. Step 6: Final answer
    x = 379,215.45

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Similar ratio
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1.5x scale

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.