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Finding the Fourth Proportional to 505,242.12, 697,234.02 and 278,887.56

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Solution

The fourth proportional to 505,242.12, 697,234.02 and 278,887.56 is: 384,864.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,242.12 : 697,234.02 = 278,887.56 : x
  2. Step 2: Convert to fraction form
    505,242.12/697,234.02 = 278,887.56/x
  3. Step 3: Cross multiply
    505,242.12x = 697,234.02 × 278,887.56
  4. Step 4: Simplify right side
    505,242.12x = 194,449,894,586.79
  5. Step 5: Solve for x
    x = 194,449,894,586.79/505,242.12
  6. Step 6: Final answer
    x = 384,864.77

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.