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Finding the Fourth Proportional to 420,074.45, 629,904.31 and 183,314.69

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Solution

The fourth proportional to 420,074.45, 629,904.31 and 183,314.69 is: 274,881.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,074.45 : 629,904.31 = 183,314.69 : x
  2. Step 2: Convert to fraction form
    420,074.45/629,904.31 = 183,314.69/x
  3. Step 3: Cross multiply
    420,074.45x = 629,904.31 × 183,314.69
  4. Step 4: Simplify right side
    420,074.45x = 115,470,713,102.79
  5. Step 5: Solve for x
    x = 115,470,713,102.79/420,074.45
  6. Step 6: Final answer
    x = 274,881.54

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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.