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Finding the Fourth Proportional to 559,976.70, 839,965.05 and 204,872.70

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Solution

The fourth proportional to 559,976.70, 839,965.05 and 204,872.70 is: 307,309.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,976.70 : 839,965.05 = 204,872.70 : x
  2. Step 2: Convert to fraction form
    559,976.70/839,965.05 = 204,872.70/x
  3. Step 3: Cross multiply
    559,976.70x = 839,965.05 × 204,872.70
  4. Step 4: Simplify right side
    559,976.70x = 172,085,907,699.14
  5. Step 5: Solve for x
    x = 172,085,907,699.14/559,976.70
  6. Step 6: Final answer
    x = 307,309.05

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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.