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Finding the Fourth Proportional to 543,183, 814,805.64 and 143,813.40

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Solution

The fourth proportional to 543,183, 814,805.64 and 143,813.40 is: 215,728.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,183 : 814,805.64 = 143,813.40 : x
  2. Step 2: Convert to fraction form
    543,183/814,805.64 = 143,813.40/x
  3. Step 3: Cross multiply
    543,183x = 814,805.64 × 143,813.40
  4. Step 4: Simplify right side
    543,183x = 117,179,969,427.58
  5. Step 5: Solve for x
    x = 117,179,969,427.58/543,183
  6. Step 6: Final answer
    x = 215,728.34

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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.