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Finding the Fourth Proportional to 215,699.76, 297,666.09 and 120,204.54

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Solution

The fourth proportional to 215,699.76, 297,666.09 and 120,204.54 is: 165,882.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,699.76 : 297,666.09 = 120,204.54 : x
  2. Step 2: Convert to fraction form
    215,699.76/297,666.09 = 120,204.54/x
  3. Step 3: Cross multiply
    215,699.76x = 297,666.09 × 120,204.54
  4. Step 4: Simplify right side
    215,699.76x = 35,780,815,422.05
  5. Step 5: Solve for x
    x = 35,780,815,422.05/215,699.76
  6. Step 6: Final answer
    x = 165,882.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.