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Finding the Fourth Proportional to 295,861.50, 408,288.87 and 161,725.50

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Solution

The fourth proportional to 295,861.50, 408,288.87 and 161,725.50 is: 223,181.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,861.50 : 408,288.87 = 161,725.50 : x
  2. Step 2: Convert to fraction form
    295,861.50/408,288.87 = 161,725.50/x
  3. Step 3: Cross multiply
    295,861.50x = 408,288.87 × 161,725.50
  4. Step 4: Simplify right side
    295,861.50x = 66,030,721,645.19
  5. Step 5: Solve for x
    x = 66,030,721,645.19/295,861.50
  6. Step 6: Final answer
    x = 223,181.19

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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.