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Finding the Fourth Proportional to 169,221.40, 253,832.66 and 42,861.60

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Solution

The fourth proportional to 169,221.40, 253,832.66 and 42,861.60 is: 64,292.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,221.40 : 253,832.66 = 42,861.60 : x
  2. Step 2: Convert to fraction form
    169,221.40/253,832.66 = 42,861.60/x
  3. Step 3: Cross multiply
    169,221.40x = 253,832.66 × 42,861.60
  4. Step 4: Simplify right side
    169,221.40x = 10,879,673,939.86
  5. Step 5: Solve for x
    x = 10,879,673,939.86/169,221.40
  6. Step 6: Final answer
    x = 64,292.54

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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.