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Finding the Fourth Proportional to 253,773, 380,665.58 and 85,295.43

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Solution

The fourth proportional to 253,773, 380,665.58 and 85,295.43 is: 127,945.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,773 : 380,665.58 = 85,295.43 : x
  2. Step 2: Convert to fraction form
    253,773/380,665.58 = 85,295.43/x
  3. Step 3: Cross multiply
    253,773x = 380,665.58 × 85,295.43
  4. Step 4: Simplify right side
    253,773x = 32,469,033,905.82
  5. Step 5: Solve for x
    x = 32,469,033,905.82/253,773
  6. Step 6: Final answer
    x = 127,945.19

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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.