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Finding the Fourth Proportional to 543,964.31, 815,945.10 and 144,604.90

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Solution

The fourth proportional to 543,964.31, 815,945.10 and 144,604.90 is: 216,906.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,964.31 : 815,945.10 = 144,604.90 : x
  2. Step 2: Convert to fraction form
    543,964.31/815,945.10 = 144,604.90/x
  3. Step 3: Cross multiply
    543,964.31x = 815,945.10 × 144,604.90
  4. Step 4: Simplify right side
    543,964.31x = 117,989,655,478.96
  5. Step 5: Solve for x
    x = 117,989,655,478.96/543,964.31
  6. Step 6: Final answer
    x = 216,906.98

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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.