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Finding the Fourth Proportional to 253,662.24, 380,509.76 and 85,175.76

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Solution

The fourth proportional to 253,662.24, 380,509.76 and 85,175.76 is: 127,769.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,662.24 : 380,509.76 = 85,175.76 : x
  2. Step 2: Convert to fraction form
    253,662.24/380,509.76 = 85,175.76/x
  3. Step 3: Cross multiply
    253,662.24x = 380,509.76 × 85,175.76
  4. Step 4: Simplify right side
    253,662.24x = 32,410,207,995.42
  5. Step 5: Solve for x
    x = 32,410,207,995.42/253,662.24
  6. Step 6: Final answer
    x = 127,769.15

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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.