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Finding the Fourth Proportional to 499,999.05, 689,993.82 and 270,551.31

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Solution

The fourth proportional to 499,999.05, 689,993.82 and 270,551.31 is: 373,358.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,999.05 : 689,993.82 = 270,551.31 : x
  2. Step 2: Convert to fraction form
    499,999.05/689,993.82 = 270,551.31/x
  3. Step 3: Cross multiply
    499,999.05x = 689,993.82 × 270,551.31
  4. Step 4: Simplify right side
    499,999.05x = 186,678,731,892.90
  5. Step 5: Solve for x
    x = 186,678,731,892.90/499,999.05
  6. Step 6: Final answer
    x = 373,358.17

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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.