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Finding the Fourth Proportional to 203,251.35, 304,853.28 and 81,666.98

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Solution

The fourth proportional to 203,251.35, 304,853.28 and 81,666.98 is: 122,490.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,251.35 : 304,853.28 = 81,666.98 : x
  2. Step 2: Convert to fraction form
    203,251.35/304,853.28 = 81,666.98/x
  3. Step 3: Cross multiply
    203,251.35x = 304,853.28 × 81,666.98
  4. Step 4: Simplify right side
    203,251.35x = 24,896,446,720.69
  5. Step 5: Solve for x
    x = 24,896,446,720.69/203,251.35
  6. Step 6: Final answer
    x = 122,490.93

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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.