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Finding the Fourth Proportional to 661,251.54, 991,848.15 and 211,994.96

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Solution

The fourth proportional to 661,251.54, 991,848.15 and 211,994.96 is: 317,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,251.54 : 991,848.15 = 211,994.96 : x
  2. Step 2: Convert to fraction form
    661,251.54/991,848.15 = 211,994.96/x
  3. Step 3: Cross multiply
    661,251.54x = 991,848.15 × 211,994.96
  4. Step 4: Simplify right side
    661,251.54x = 210,266,811,364.94
  5. Step 5: Solve for x
    x = 210,266,811,364.94/661,251.54
  6. Step 6: Final answer
    x = 317,983.10

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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.