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Finding the Fourth Proportional to 662,661.12, 993,892.02 and 213,322.56

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Solution

The fourth proportional to 662,661.12, 993,892.02 and 213,322.56 is: 319,951.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,661.12 : 993,892.02 = 213,322.56 : x
  2. Step 2: Convert to fraction form
    662,661.12/993,892.02 = 213,322.56/x
  3. Step 3: Cross multiply
    662,661.12x = 993,892.02 × 213,322.56
  4. Step 4: Simplify right side
    662,661.12x = 212,019,590,069.97
  5. Step 5: Solve for x
    x = 212,019,590,069.97/662,661.12
  6. Step 6: Final answer
    x = 319,951.76

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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.